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词条 Browser security
释义

  1. Security

     Plugins and extensions  Flash 

  2. Password security model

  3. Hardware browser

  4. LiveCD

  5. Browser hardening

  6. Fuzzing

  7. Best practice

  8. See also

  9. References

  10. Further reading

{{Use dmy dates|date=October 2013}}

Browser security is the application of Internet security to web browsers in order to protect networked data and computer systems from breaches of privacy or malware. Security exploits of browsers often use JavaScript — sometimes with cross-site scripting (XSS)[1] — sometimes with a secondary payload using Adobe Flash.[2] Security exploits can also take advantage of vulnerabilities (security holes) that are commonly exploited in all browsers (including Mozilla Firefox,[3] Google Chrome,[4] Opera,[5] Microsoft Internet Explorer,[6] and Safari[7]).

Security

Web browsers can be breached in one or more of the following ways:

  • Operating system is breached and malware is reading/modifying the browser memory space in privilege mode[8]
  • Operating system has a malware running as a background process, which is reading/modifying the browser memory space in privileged mode
  • Main browser executable can be hacked
  • Browser components may be hacked
  • Browser plugins can be hacked
  • Browser network communications could be intercepted outside the machine[9]

The browser may not be aware of any of the breaches above and may show user a safe connection is made.

Whenever a browser communicates with a website, the website, as part of that communication, collects some information about the browser (in order to process the formatting of the page to be delivered, if nothing else).[10] If malicious code has been inserted into the website's content, or in a worst-case scenario, if that website has been specifically designed to host malicious code, then vulnerabilities specific to a particular browser can allow this malicious code to run processes within the browser application in unintended ways (and remember, one of the bits of information that a website collects from a browser communication is the browser's identity- allowing specific vulnerabilities to be exploited).[11] Once an attacker is able to run processes on the visitor's machine, then exploiting known security vulnerabilities can allow the attacker to gain privileged access (if the browser isn't already running with privileged access) to the "infected" system in order to perform an even greater variety of malicious processes and activities on the machine or even the victim's whole network.[12]

Breaches of web browser security are usually for the purpose of bypassing protections to display pop-up advertising[13] collecting personally identifiable information (PII) for either Internet marketing or identity theft, website tracking or web analytics about a user against their will using tools such as web bugs, Clickjacking, Likejacking (where Facebook's like button is targeted),[14][15][16][17] HTTP cookies, zombie cookies or Flash cookies (Local Shared Objects or LSOs);[2] installing adware, viruses, spyware such as Trojan horses (to gain access to users' personal computers via cracking) or other malware including online banking theft using man-in-the-browser attacks.

Vulnerabilities in the web browser software itself can be minimized by keeping browser software updated,[18] but will not be sufficient if the underlying operating system is compromised, for example, by a rootkit.[19] Some subcomponents of browsers such as scripting, add-ons, and cookies[20][21][22] are particularly vulnerable ("the confused deputy problem") and also need to be addressed.

Following the principle of defence in depth, a fully patched and correctly configured browser may not be sufficient to ensure that browser-related security issues cannot occur. For example, a rootkit can capture keystrokes while someone logs into a banking website, or carry out a man-in-the-middle attack by modifying network traffic to and from a web browser. DNS hijacking or DNS spoofing may be used to return false positives for mistyped website names, or to subvert search results for popular search engines. Malware such as RSPlug simply modifies a system's configuration to point at rogue DNS servers.

Browsers can use more secure methods of network communication to help prevent some of these attacks:

  • DNS: DNSSec and DNSCrypt, for example with non-default DNS servers such as Google Public DNS or OpenDNS.
  • HTTP: HTTP Secure and SPDY with digitally signed public key certificates or Extended Validation Certificates.

Perimeter defenses, typically through firewalls and the use of filtering proxy servers that block malicious websites and perform antivirus scans of any file downloads, are commonly implemented as a best practice in large organizations to block malicious network traffic before it reaches a browser.

The topic of browser security has grown to the point of spawning the creation of entire organizations, such as The Browser Exploitation Framework Project,[23] creating platforms to collect tools to breach browser security, ostensibly in order to test browsers and network systems for vulnerabilities.

Plugins and extensions

Although not part of the browser per se, browser plugins and extensions extend the attack surface, exposing vulnerabilities in Adobe Flash Player, Adobe (Acrobat) Reader, Java plugin, and ActiveX that are commonly exploited. Malware may also be implemented as a browser extension, such as a browser helper object in the case of Internet Explorer.[24] Browsers like Google Chrome and Mozilla Firefox can block—or warn users of—insecure plugins.

Flash

{{Main article|Local shared object#Privacy concerns}}

An August 2009 study by the Social Science Research Network found that 50% of websites using Flash were also employing flash cookies, yet privacy policies rarely disclosed them, and user controls for privacy preferences were lacking.[25] Most browsers' cache and history delete functions do not affect Flash Player's writing Local Shared Objects to its own cache, and the user community is much less aware of the existence and function of Flash cookies than HTTP cookies.[26] Thus, users having deleted HTTP cookies and purged browser history files and caches may believe that they have purged all tracking data from their computers when in fact Flash browsing history remains. As well as manual removal, the BetterPrivacy addon for Firefox can remove Flash cookies.[2] Adblock Plus can be used to filter out specific threats[13] and Flashblock can be used to give an option before allowing content on otherwise trusted sites.[27]

Charlie Miller recommended "not to install Flash"[28] at the computer security conference CanSecWest. Several other security experts also recommend to either not install Adobe Flash Player or to block it.[29]

Password security model

The contents of a web page are arbitrary and controlled by the entity owning the domain named displayed in the address bar. If HTTPS is used, then encryption is used to secure against attackers with access to the network from changing the page contents en route. When presented with a password field on a web page, a user is supposed to look at the address bar to determine whether the domain name in the address bar is the correct place to send the password.[30] For example, for Google's single sign-on system (used on e.g. youtube.com), the user should always check that the address bar says "https://accounts.google.com" before inputting their password.

An un-compromised browser guarantees that the address bar is correct. This guarantee is one reason why browsers will generally display a warning when entering fullscreen mode, on top of where the address bar would normally be, so that a fullscreen website cannot make a fake browser user interface with a fake address bar.[31]

Hardware browser

There have been attempts to market hardware-based browsers running from non-writable, read-only file systems. Data cannot be stored on the device and the media cannot be overwritten, presenting a clean executable each time it loads. The first such device was the ZeusGard Secure Hardware Browser, released in late 2013. The ZeusGard website has not been functional since mid-2016. Another device, the iCloak® Stik from [https://www.iCloak.me the iCloak website] provides a complete Live OS which completely replaces the computer's entire operating system and offers two web browsers from the read-only system. With iCloak they provide the Tor browser for Anonymous browsing as well as a regular Firefox browser for non-anonymous browsing. Any non-secured web traffic (not using https, for example), could still be subject to man-in-the-middle alteration or other network traffic-based manipulations.

LiveCD

LiveCDs, which run an operating system from a non-writable source, typically come with internet browsers as part of their default image. If the original LiveCD image is free of malware, all of the software used, including the internet browser, will load free of malware every time the LiveCD image is booted.

Browser hardening

One of the most effective ways to browse the web safely is to use browser patches to avoid the Cross-Origin Resource Sharing vulnerability (example patches are provided for WebKit-based browsers).

Also, browsing the Internet as a least-privilege user account (i.e. without administrator privileges) limits the ability of a security exploit in a web browser from compromising the whole operating system.[32]

Internet Explorer 4 and later allows the blacklisting[33][34][35] and whitelisting[36][37] of ActiveX controls, add-ons and browser extensions in various ways.

Internet Explorer 7 added "protected mode", a technology that hardens the browser through the application of a security sandboxing feature of Windows Vista called Mandatory Integrity Control.[38]Google Chrome provides a sandbox to limit web page access to the operating system.[39]

Suspected malware sites reported to Google,[40] and confirmed by Google, are flagged as hosting malware in certain browsers.[41]

There are third-party extensions and plugins available to harden even the latest browsers,[42] and some for older browsers and operating systems. Whitelist-based software such as NoScript can block JavaScript and Adobe Flash which is used for most attacks on privacy, allowing users to choose only sites they know are safe - AdBlock Plus also uses whitelist ad filtering rules subscriptions, though both the software itself and the filtering list maintainers have come under controversy for by-default allowing some sites to pass the pre-set filters.[43] The US-CERT recommends to block Flash using NoScript.[44]

Fuzzing

Modern web browsers undergo extensive fuzzing to uncover vulnerabilities. The Chromium code of Google Chrome is continuously fuzzed by the Chrome Security Team with 15,000 cores.[45] For Microsoft Edge and Internet Explorer, Microsoft performed fuzzed testing with 670 machine-years during product development, generating more than 400 billion DOM manipulations from 1 billion HTML files.[46][45]

Best practice

  • Load clean software: Boot from a known clean OS that has a known clean internet browser
  • Prevent DNS manipulation: Use trusted and secure DNS
  • Adopt adequate countermeasures against the Cross-Origin Resource Sharing vulnerability (example patches are provided for WebKit-based browsers)
  • Prevent attacks via third-party software: Use a hardened internet browser or add-on-free-browsing mode
  • Avoid website-based exploits: Employ link-checking browser plug-ins commonly found in internet security software
  • Avoid malicious content: Employ perimeter defenses and anti-malware software

See also

  • Filter bubble
  • Frame injection
  • Identity driven networking
  • Internet safety
  • Network security policy
  • Web application security

References

1. ^{{cite web |url=https://addons.mozilla.org/firefox/addon/noscript |title=NoScript :: Add-ons for Firefox |authorlink=Giorgio Maone |first=Giorgio |last=Maone |work=Mozilla Add-ons |publisher=Mozilla Foundation}}
2. ^1 2 {{cite web |url=https://addons.mozilla.org/firefox/addon/betterprivacy |title=BetterPrivacy :: Add-ons for Firefox |author=[https://addons.mozilla.org/en-US/firefox/user/516763/ NC] (Social Science Research Network)|work=Mozilla Add-ons |publisher=Mozilla Foundation}}
3. ^Keizer, Greg. Firefox 3.5 Vulnerability Confirmed {{webarchive|url=https://web.archive.org/web/20101028041630/http://www.pcworld.com/article/168461/firefox_35_vulnerability_confirmed.html |date=28 October 2010 }}. Retrieved 19 November 2010.
4. ^Messmer, Ellen and NetworkWorld. [https://www.pcworld.com/article/210797/google_chrome_tops_dirty_dozen_vulnerable_apps_list.html "Google Chrome Tops 'Dirty Dozen' Vulnerable Apps List"]. Retrieved 19 November 2010.
5. ^Skinner, Carrie-Ann. Opera Plugs "Severe" Browser Hole {{webarchive |url=https://web.archive.org/web/20090520070700/http://www.pcworld.com/article/155854/opera_plugs_severe_browser_hole.html |date=20 May 2009 }}. Retrieved 19 November 2010.
6. ^Bradly, Tony. [https://www.pcworld.com/article/191356/its_time_to_finally_drop_internet_explorer_6.html "It's Time to Finally Drop Internet Explorer 6" ] {{webarchive|url=https://web.archive.org/web/20121015135539/http://www.pcworld.com/article/191356/Its_Time_to_Finally_Drop_Internet_Explorer_6.html |date=15 October 2012 }}. Retrieved 19 November 2010.
7. ^{{cite web|url=http://mashable.com/follow/topics/browser/|title=Browser|publisher=Mashable|accessdate=2 September 2011|deadurl=no|archiveurl=https://web.archive.org/web/20110902145020/http://mashable.com/follow/topics/browser/|archivedate=2 September 2011|df=dmy-all}}
8. ^{{cite web|last=Smith|first=Dave|title=The Yontoo Trojan: New Mac OS X Malware Infects Google Chrome, Firefox And Safari Browsers Via Adware|url=http://www.ibtimes.com/yontoo-trojan-new-mac-os-x-malware-infects-google-chrome-firefox-safari-browsers-adware-1142969|publisher=IBT Media Inc|accessdate=21 March 2013|deadurl=no|archiveurl=https://web.archive.org/web/20130324025727/http://www.ibtimes.com/yontoo-trojan-new-mac-os-x-malware-infects-google-chrome-firefox-safari-browsers-adware-1142969|archivedate=24 March 2013|df=dmy-all}}
9. ^{{cite web|last=Goodin|first=Dan|title=MySQL.com breach leaves visitors exposed to malware|url=https://www.theregister.co.uk/2011/09/26/mysql_hacked/|accessdate=26 September 2011|deadurl=no|archiveurl=https://web.archive.org/web/20110928045543/http://www.theregister.co.uk/2011/09/26/mysql_hacked/|archivedate=28 September 2011|df=dmy-all}}
10. ^{{cite web | url=http://oreilly.com/catalog/httppr/chapter/http_pkt.html | title=HTTP Transactions | author=Clinton Wong | publisher=O'Reilly | deadurl=yes | archiveurl=https://web.archive.org/web/20130613235658/http://oreilly.com/catalog/httppr/chapter/http_pkt.html | archivedate=13 June 2013 | df=dmy-all }}
11. ^{{cite web | url=http://www.ebernieinc.com/9-ways-to-know-your-pc-is-infected-with-malware/ | title=9 Ways to Know Your PC is Infected with Malware | deadurl=yes | archiveurl=https://web.archive.org/web/20131111192509/http://www.ebernieinc.com/9-ways-to-know-your-pc-is-infected-with-malware/ | archivedate=11 November 2013 | df=dmy-all }}
12. ^{{cite web | url=http://www.symantec.com/security_response/whitepapers.jsp?inid=us_sr_flyout_publications_security | title=Symantec Security Response Whitepapers | deadurl=no | archiveurl=https://web.archive.org/web/20130609070315/http://www.symantec.com/security_response/whitepapers.jsp?inid=us_sr_flyout_publications_security | archivedate=9 June 2013 | df=dmy-all }}
13. ^1 {{cite web |url=https://addons.mozilla.org/firefox/addon/adblock-plus |title=Adblock Plus :: Add-ons for Firefox |authorlink=Wladimir Palant |first=Wladimir |last=Palant |work=Mozilla Add-ons |publisher=Mozilla Foundation}}
14. ^{{cite news|url=http://www.cbc.ca/news/technology/story/2010/09/23/facebook-like-invitations.html|title=Facebook privacy probed over 'like,' invitations|date=23 September 2010|work=CBC News|accessdate=24 August 2011|deadurl=no|archiveurl=https://web.archive.org/web/20120626205135/http://www.cbc.ca/news/technology/story/2010/09/23/facebook-like-invitations.html|archivedate=26 June 2012|df=dmy-all}}
15. ^{{cite news|url=https://www.pcmag.com/article2/0,2817,2391440,00.asp|title=German Agencies Banned From Using Facebook, 'Like' Button|last=Albanesius|first=Chloe|date=19 August 2011|work=PC Magazine|accessdate=24 August 2011|deadurl=no|archiveurl=https://web.archive.org/web/20120329043111/http://www.pcmag.com/article2/0,2817,2391440,00.asp |archivedate=29 March 2012|df=dmy-all}}
16. ^{{cite news |last = McCullagh |first = Declan |authorlink = Declan McCullagh |title = Facebook 'Like' button draws privacy scrutiny |publisher = CNET News |url = http://news.cnet.com/8301-13578_3-20006532-38.html |date = 2 June 2010 |accessdate = 19 December 2011 |deadurl = no |archiveurl = https://web.archive.org/web/20111205014333/http://news.cnet.com/8301-13578_3-20006532-38.html |archivedate = 5 December 2011 |df = dmy-all}}
17. ^{{cite web|ssrn=1717563|title=Facebook Tracks and Traces Everyone: Like This!|last=Roosendaal|first=Arnold|date=30 November 2010|accessdate=27 September 2011}}
18. ^{{cite web|url=http://itsecurity.vermont.gov/threats/web_attacks|title=Web Browser Attacks|author=State of Vermont|accessdate=11 April 2012|deadurl=yes|archiveurl=https://web.archive.org/web/20120213180056/http://itsecurity.vermont.gov/threats/web_attacks|archivedate=13 February 2012|df=dmy-all}}
19. ^{{cite web |url=https://www.symantec.com/avcenter/reference/windows.rootkit.overview.pdf |title=Windows Rootkit Overview |publisher=Symantec |date= |accessdate=2013-04-20 |deadurl=no |archiveurl=https://web.archive.org/web/20130516120234/https://www.symantec.com/avcenter/reference/windows.rootkit.overview.pdf |archivedate=16 May 2013 |df=dmy-all }}
20. ^{{cite web|url=http://www.acunetix.com/websitesecurity/cross-site-scripting/|title=Cross Site Scripting Attack|accessdate=20 May 2013|deadurl=no|archiveurl=https://web.archive.org/web/20130515154916/http://www.acunetix.com/websitesecurity/cross-site-scripting/|archivedate=15 May 2013|df=dmy-all}}
21. ^{{cite web|url=http://blog.zeltser.com/post/2527547617/targeting-web-browser|title=Mitigating Attacks on the Web Browser and Add-Ons|author=Lenny Zeltser|accessdate=20 May 2013|deadurl=no|archiveurl=https://web.archive.org/web/20130507092833/http://blog.zeltser.com/post/2527547617/targeting-web-browser|archivedate=7 May 2013|df=dmy-all}}
22. ^{{cite web|url=https://arstechnica.com/security/2013/03/new-attacks-on-ssl-decrypt-authentication-cookies/|title=Two new attacks on SSL decrypt authentication cookies|author=Dan Goodin|accessdate=20 May 2013|deadurl=no|archiveurl=https://web.archive.org/web/20130515021000/http://arstechnica.com/security/2013/03/new-attacks-on-ssl-decrypt-authentication-cookies/|archivedate=15 May 2013|df=dmy-all}}
23. ^{{cite web|url=http://beefproject.com/|title=beefproject.com|deadurl=no|archiveurl=https://web.archive.org/web/20110811035950/http://beefproject.com/ |archivedate=11 August 2011|df=dmy-all}}
24. ^{{cite web|url=http://www.symantec.com/business/support/index?page=content&id=TECH94965|title=How to Create a Rule That Will Block or Log Browser Helper Objects in Symantec Endpoint Protection|publisher=Symantec.com|accessdate=12 April 2012|deadurl=no|archiveurl=https://web.archive.org/web/20130514095634/http://www.symantec.com/business/support/index?page=content&id=TECH94965|archivedate=14 May 2013|df=dmy-all}}
25. ^{{cite web|ssrn=1446862|title=Soltani, Ashkan, Canty, Shannon, Mayo, Quentin, Thomas, Lauren and Hoofnagle, Chris Jay: Flash Cookies and Privacy|date=2009-08-10 |accessdate=2009-08-18}}
26. ^{{cite web|url=http://epic.org/privacy/cookies/flash.html|title=Local Shared Objects -- "Flash Cookies"|publisher=Electronic Privacy Information Center|date=2005-07-21|accessdate=2010-03-08| archiveurl=https://web.archive.org/web/20100416041024/http://epic.org/privacy/cookies/flash.html| archivedate= 16 April 2010 | deadurl= no}}
27. ^{{cite web|url=https://addons.mozilla.org/firefox/addon/flashblock |title=Flashblock :: Add-ons for Firefox |authorlink=Philip Chee |first=Philip |last=Chee|work=Mozilla Add-ons |publisher=Mozilla Foundation}}
28. ^{{cite web|url=http://www.oneitsecurity.it/01/03/2010/interview-with-charlie-miller-pwn2own/|title=Pwn2Own 2010: interview with Charlie Miller|date=2010-03-01|accessdate=2010-03-27}}
29. ^{{cite web|url=http://news.cnet.com/8301-27080_3-10396326-245.html|title=Expert says Adobe Flash policy is risky|date=2009-11-12|accessdate=2010-03-27|deadurl=no|archiveurl=https://web.archive.org/web/20110426041823/http://news.cnet.com/8301-27080_3-10396326-245.html|archivedate=26 April 2011|df=dmy-all}}
30. ^{{cite web|title=Browser Security Model|url=https://crypto.stanford.edu/cs155old/cs155-spring11/lectures/08-browser-sec-model.pdf|author=John C. Mitchell|deadurl=no|archiveurl=https://web.archive.org/web/20150620051731/http://crypto.stanford.edu/cs155old/cs155-spring11/lectures/08-browser-sec-model.pdf|archivedate=20 June 2015|df=dmy-all}}
31. ^{{cite web|url=http://feross.org/html5-fullscreen-api-attack/|title=Using the HTML5 Fullscreen API for Phishing Attacks » Feross.org|author=|date=|website=feross.org|accessdate=7 May 2018|deadurl=no|archiveurl=https://web.archive.org/web/20171225134343/https://feross.org/html5-fullscreen-api-attack/|archivedate=25 December 2017|df=dmy-all}}
32. ^{{ cite web | url = https://technet.microsoft.com/en-us/library/cc700846.aspx | title = Using a Least-Privileged User Account | publisher = Microsoft | accessdate = 2013-04-20 | deadurl = no | archiveurl = https://web.archive.org/web/20130306091913/http://technet.microsoft.com/en-us/library/cc700846.aspx | archivedate = 6 March 2013 | df = dmy-all }}
33. ^{{ cite web | url = http://support.microsoft.com/kb/240797/en-us | title = How to Stop an ActiveX control from running in Internet Explorer | publisher = Microsoft | accessdate = 2014-11-22 | deadurl = no | archiveurl = https://web.archive.org/web/20141202224151/http://support.microsoft.com/kb/240797/en-us | archivedate = 2 December 2014 | df = dmy-all }}
34. ^{{ cite web | url = https://support.microsoft.com/kb/182569/en-us | title = Internet Explorer security zones registry entries for advanced users | publisher = Microsoft | accessdate = 2014-11-22 | deadurl = no | archiveurl = https://web.archive.org/web/20141202224143/https://support.microsoft.com/kb/182569/en-us | archivedate = 2 December 2014 | df = dmy-all }}
35. ^{{ cite web | url = https://technet.microsoft.com/en-us/library/dn761713.aspx | title = Out-of-date ActiveX control blocking | publisher = Microsoft | accessdate = 2014-11-22 | deadurl = no | archiveurl = https://web.archive.org/web/20141129121819/http://technet.microsoft.com/en-us/library/dn761713.aspx | archivedate = 29 November 2014 | df = dmy-all }}
36. ^{{ cite web | url = https://technet.microsoft.com/en-us/library/cc737458.aspx | title = Internet Explorer Add-on Management and Crash Detection | publisher = Microsoft | accessdate = 2014-11-22 | deadurl = no | archiveurl = https://web.archive.org/web/20141129121822/http://technet.microsoft.com/en-us/library/cc737458.aspx | archivedate = 29 November 2014 | df = dmy-all }}
37. ^{{ cite web | url = http://support.microsoft.com/kb/883256/en-us | title = How to Manage Internet Explorer Add-ons in Windows XP Service Pack 2 | publisher = Microsoft | accessdate = 2014-11-22 | deadurl = no | archiveurl = https://web.archive.org/web/20141202192535/http://support.microsoft.com/kb/883256/en-us | archivedate = 2 December 2014 | df = dmy-all }}
38. ^{{ cite web | url = http://www.symantec.com/avcenter/reference/Windows_Vista_Security_Model_Analysis.pdf | title = Analysis of the Windows Vista Security Model | author = Matthew Conover | publisher = Symantec Corporation | accessdate = 2007-10-08 | deadurl = no | archiveurl = https://web.archive.org/web/20080516053130/http://www.symantec.com/avcenter/reference/Windows_Vista_Security_Model_Analysis.pdf | archivedate = 16 May 2008 | df = dmy-all }}
39. ^{{ cite web | title = Browser Security: Lessons from Google Chrome | url = http://cacm.acm.org/magazines/2009/8/34494-browser-security/fulltext | deadurl = no | archiveurl = https://web.archive.org/web/20131111194250/http://cacm.acm.org/magazines/2009/8/34494-browser-security/fulltext | archivedate = 11 November 2013 | df = dmy-all }}
40. ^{{ cite web | url = https://www.google.com/safebrowsing/report_badware/ | title = Report malicious software (URL) to Google | deadurl = no | archiveurl = https://web.archive.org/web/20140912233915/https://www.google.com/safebrowsing/report_badware/ | archivedate = 12 September 2014 | df = dmy-all }}
41. ^{{ cite web | url = http://www.google.com/transparencyreport/safebrowsing/?hl=en | title = Google Safe Browsing | deadurl = no | archiveurl = https://web.archive.org/web/20140914200617/http://www.google.com/transparencyreport/safebrowsing/?hl=en | archivedate = 14 September 2014 | df = dmy-all }}
42. ^{{ cite web | url = http://www.zonealarm.com/blog/2014/05/5-ways-to-secure-your-web-browser/ | title = 5 Ways to Secure Your Web Browser | publisher = ZoneAlarm | deadurl = no | archiveurl = https://web.archive.org/web/20140907191153/http://www.zonealarm.com/blog/2014/05/5-ways-to-secure-your-web-browser/ | archivedate = 7 September 2014 | df = dmy-all }}
43. ^{{ cite web | url = http://siliconfilter.com/adblock-plus-will-soon-block-fewer-ads-by-default-allow-non-intrusive-ads/ | title = Adblock Plus Will Soon Block Fewer Ads — SiliconFilter | publisher = Siliconfilter.com | accessdate = 2013-04-20 | deadurl = no | archiveurl = https://web.archive.org/web/20130130044410/http://siliconfilter.com/adblock-plus-will-soon-block-fewer-ads-by-default-allow-non-intrusive-ads/ | archivedate = 30 January 2013 | df = dmy-all }}
44. ^{{cite web|url=http://www.us-cert.gov/reading_room/securing_browser/|title=Securing Your Web Browser|accessdate=2010-03-27| archiveurl=https://web.archive.org/web/20100326131333/http://www.us-cert.gov/reading_room/securing_browser/| archivedate= 26 March 2010 | deadurl= no}}
45. ^1 {{cite web |last1=Sesterhenn |first1=Eric |last2=Wever |first2=Berend-Jan |last3=Orrù |first3=Michele |last4=Vervier |first4=Markus |title=Browser Security WhitePaper |url=https://browser-security.x41-dsec.de/X41-Browser-Security-White-Paper.pdf |publisher=X41D SEC GmbH |date=19 Sep 2017}}
46. ^{{cite web |title=Security enhancements for Microsoft Edge (Microsoft Edge for IT Pros) |url=https://docs.microsoft.com/en-us/microsoft-edge/deploy/security-enhancements-microsoft-edge |publisher=Microsoft |accessdate=31 August 2018 |language=en-us |date=15 Oct 2017}}

Further reading

  • {{cite web |last1=Sesterhenn |first1=Eric |last2=Wever |first2=Berend-Jan |last3=Orrù |first3=Michele |last4=Vervier |first4=Markus |title=Browser Security White Paper |url=https://browser-security.x41-dsec.de/X41-Browser-Security-White-Paper.pdf |publisher=X41D SEC GmbH |date=19 Sep 2017}}
  • {{cite web |last1=Heiderich |first1=Mario |last2=Inführ |first2=Alex |last3=Fäßler |first3=Fabian |last4=Krein |first4=Nikolai |last5=Kinugawa |first5=Masato |title=Cure53 Browser Security White Paper |url=https://cure53.de/browser-security-whitepaper.pdf |publisher=Cure53 |date=29 Nov 2017}}
{{Web browsers|fsp}}{{Malware}}

3 : Web browsers|Web security exploits|Computer network security
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