Online tools

Useful freeware and other online tools.
A more detailed list of freeware may be found at: gizmo's freeware such as this article, Probably the Best Free Security List in the World

Free online single file scanning

• http://virustotal.com (max file size 20 MB, 42 different antiviruses)
• http://virscan.org (max file size 20 MB, 37 different antiviruses)
• http://scanner.novirusthanks.org (max file size 20 MB, 24 different antiviruses)
• http://scanner.virus.org (max file size 5 MB, 23 different antiviruses)
• http://virusscan.jotti.org (max file size 10 MB, 20 different antiviruses)
• http://viruschief.com (10 different antiviruses)
• http://filterbit.com (9 different antiviruses)

Free online folder/computer scanning

• a-squared : http://www.emsisoft.com/en/software/ax/?scan=1
• BitDefender : http://www.bitdefender.com/scanner/online/free.html
• Computer Associates : http://cainternetsecurity.net/entscanner/
• ESET (NOD32) : http://www.eset.com/onlinescan/
• F-Secure: http://www.f-secure.com/en_EMEA/security/security-lab/tools-and-services/online-scanner/index.html (IE only)
• Microsoft OneCare : http://onecare.live.com/site/en-us/default.htm
• TrendMicro : http://housecall.trendmicro.com
• Panda : http://www.pandasecurity.com/activescan/index/

Anti-Virus / Anti-Malware products free and fully functional

Anti-virus

• avast! : http://www.avast.com/
• AntiVir : http://www.avira.com/
  alternate: http://free-av.com/
  AntiVir Free update problem
• AVG : http://www.avg.com/
• Comodo : http://www.comodo.com/
• ClamWin : http://www.clamwin.com/
• ClamAV : http://www.clamav.net/
• Microsoft Security Essentials : https://www.microsoft.com/Security_essentials/
• Panda Cloud : http://www.cloudantivirus.com/

Anti-Malware

• Ad-Aware : http://www.lavasoft.com
• a-squared : https://www.emsisoft.com
• MalwareBytes : http://www.malwarebytes.org
• Spybot S&D : http://www.safer-networking.org/index2.html

Anti-spyware products

• SpywareBlaster : https://www.javacoolsoftware.com
• Spyware Terminator : https://www.spywareterminator.com
• SUPERAntiSpyware : https://www.superantispyware.com
• Windows Defender : https://www.microsoft.com/windows/products/winfamily/defender/default.mspx

Intrusion prevention

• GeSWall : http://www.gentlesecurity.com

Windows start-up manager

• WinPatrol : http://winpatrol.com

Windows system scanner

• HijackThis (HJT) : http://free.antivirus.com/hijackthis/
  (used in conjunction with Malware support forums for troubleshooting system failures)

MX tools

Check if your IP or domain is blacklisted as a source for Spam

• http://www.mxtoolbox.com/ : Check each MX record (IP Address) against 147 DNS based blacklists.

Spam / PHISH aggregators

• AbuseButler : http://spamvertised.abusebutler.com
• joewein.de LLC : http://www.joewein.net
• PhishTank : http://www.phishtank.com
• Project Honey Pot : https://www.projecthoneypot.org
• SORBS (Spam and Open-Relay Blocking System) : http://www.us.sorbs.net
• Spacequad : http://www.spacequad.com
• SpamCop : http://www.spamcop.net
• SURBL : http://www.surbl.org
• uriBL : http://www.uribl.com

Email headers

• Email Headers

  How to View them and Include them in Reporting a Spam or Scam

  * http://spamlinks.net/track-trace-headers.htm

  * http://www.consumerfraudreporting.org/email_headers.php

• Copy and paste the headers to reveal their source:

  * http://www.ip-adress.com/trace_email

  * http://www.find-ip-address.org/email-search/find-email.php

  * http://www.ipaddresslocation.org/email-tracking/email-header.php

• Decoding the spam; head to eternity - an article courtesy of MysteryFCM aka: hpHosts

  http://mysteryfcm.co.uk/?mode=Articles&date=25-11-2005

Reporting Spam

• Spamtrackers article : http://www.spamtrackers.eu/wiki/index.php/Reporting_Spam
• Sign up for a Spamcop account and report the spam : http://spamcop.net/
• Join others who are fighting spam at IBR : http://inboxrevenge.com/

Associated forum topic

Spam

Anti-spam portal

• Spam Links : http://spamlinks.net/

  the anti-spam portal: everything you didn't want to have to know about spam. Whether you are entirely new to the struggle against spam, or are a seasoned professional system administrator, we direct you to the best resources available to counter spam

Reputation tools

These tools can help evaluate the reputation of websites. Some are based on user reports, corporate/organization reports or automated tools (links checkers, anti-viruses, sandboxes...)

• ATMA IP Deny list - Peerguardian format : http://www.atma.es
• AVG LinkScanner : http://linkscanner.explabs.com/linkscanner/avg
• Browser Defender : http://www.browserdefender.com
• Google Safe Browsing : http://www.google.com/safebrowsing/diagnostic?site=example.com (replace "example.com" with the IP or domain name)
• hpHosts : http://hosts-file.net
• MalwareDomainList : http://www.malwaredomainlist.com/mdl.php
• MalwarePatrol : http://www.malwarepatrol.net/lists.shtml
• MalwareUrl : http://www.malwareurl.com
• McAfee SiteAdvisor : https://www.siteadvisor.com
• McAfee TrustedSource : https://www.trustedsource.org/en/tools
• No Virus, Thanks : http://scanner.novirusthanks.org (File Scanning)
• Norton SafeWeb : https://safeweb.norton.com
• Phish Tank : http://www.phishtank.com
• Sitevet : http://sitevet.com/
• Unmask Parasites : http://unmaskparasites.com
• URL Void : http://www.urlvoid.com
• Web Security Guard : http://www.websecurityguard.com

Network tools

• http://www.aguse.jp/ : whois, DNS, thumbnail, blacklist check, more.
• http://centralops.net/co/ : Free online network utilities
• http://clez.net/net/ : Free complete network tools for online research.
• http://whois.domaintools.com/ : Whois lookup and Domain name search.
• http://www.who.is/ : whois, DNS, more.
• http://ping.eu : online ping/whois/traceroute/port check/reverse lookup/...
• http://www.geoiptool.com/ : Free online geolocation (from server name or IP)
• http://ipinfodb.com/ : Free online geolocation (from server name or IP)
• http://www.robtex.com/ : Swiss army knife internet tool. Check: RBL, DNS, IP, C-net, whois, Route, AS info, and more.
• http://www.intodns.com/ : checks the health and configuration and provides DNS report and mail servers report.
• http://network-tools.com/ : various: ping, whois, DNS, etc.
• http://untiny.me/ : Get real url from shortened URLs like tinyurl.com (and other) without actually following the link
• http://www.just-traceroute.com/ : Traceroute from 4 different locations.
• http://www.herdict.org/web/ : Herdict Web aggregates reports of inaccessible sites

Pharmacy verification

• http://www.nabp.net : The National Association of Boards of Pharmacy
• http://www.ciparx.ca : The Canadian International Pharmacy Association
• http://www.legitscript.com : LegitScript (USA and Canada)

SSL Certification testing

• https://www.digicert.com/help : Check SSL Certificate for proper installation.
• https://www.sslshopper.com/ssl-checker.html : Check SSL Certificate, also has a widget to add to your website or blog.

Parental control

See main article: Parental Controls

List of Noteworthy Internet Explorer addons

See main article: Internet Explorer

List of Noteworthy Firefox addons

See main article: Firefox

Check for obsolete software

Scans for outdated software that is vulnerable to exploit codes, etc.

• F-Secure : http://support.f-secure.com/enu/home/onlineservices/fshc.shtml
• Secunia OSI : http://secunia.com/vulnerability_scanning/online/
• FileHippo.com Update Checker : http://www.filehippo.com/updatechecker/
• Plug-In Check for Firefox : https://www-trunk.stage.mozilla.com/en-US/plugincheck/

Miscellaneous

• Anubis : http://anubis.iseclab.org/ (reports the behavior of a Windows executable and activities in Internet Explorer)
• AutoShun (snort list) : http://www.autoshun.org/
• Better Business Bureau (USA and Canada company verification) : https://www.bbb.org
• Bitzi : http://bitzi.com/ (Collaborative file identification)
• BoardReader domain link check : http://boardreader.com/domain/mywot.com
• Malicious code detection (PDF/Javascript/Flash): http://wepawet.iseclab.org/
• Newly Registered Domain Names : http://domain-daily.com/
• NetworkMiner (Network Forensic Analysis Tool (NFAT) for Windows) : http://networkminer.sourceforge.net/
• Norman Sandbox : http://www.norman.com/microsites/nsic/Submit/en (reports the behaviour of a Windows executable run inside a virtual machine).
• PC Flank Security Tests : http://www.pcflank.com/index.htm (scans for possible exploits you are leaving behind you)
• Pop-up Test : http://www.popuptest.com/ (tests your pop-up blocker)
• Sandboxie : http://www.sandboxie.com/ (reports the behaviour of a Windows executable run inside a sandbox)
• Site Dossier : http://sitedossier.com/
• Snort network intrusion prevention and detection system (IDS/IPS) : http://www.snort.org/
• Spamavert.com : http://spamavert.com/ (obtain spam from this small inbox)
• SystemLookup : http://www.systemlookup.com/ (search engine for CLSIDs, services and etc. listing them as either legitimate or malicious)
• Tor : http://www.torproject.org/ (surf with more privacy)
• VB100% : http://www.virusbtn.com/vb100/index (keep updated on which antiviruses are passing the latest malware tests)
• WebCHeck (UK company verification) : http://wck2.companieshouse.gov.uk/53444b46005755607d6d6b965d400416/wcframe?name=accessCompanyInfo