More information can be found at http://walkersam.blogspot.com/.
Use a site such as Trend Micro's free online virus scan or Symantec's Security Scan to perform an on-line virus scan. A site that offers basic security checks is http://www.grc.com/. Malware examples may be found here. Symantec's SymDiag has a local scan option https://support.symantec.com/en_US/article.TECH170752.html.
Sites such as https://urlhaus.abuse.ch/browse/, https://www.hybrid-analysis.com/, https://app.any.run/, https://www.abuseipdb.com/, http://urlscan.io/, http://onlinelinkscan.com/, http://www.unmaskparasites.com/, http://urlvoid.com/, http://www.quttera.com/, http://www.urlquery.net/, https://cymon.io, https://www.joesandbox.com, https://global.sitesafety.trendmicro.com, and http://sitecheck.sucuri.net/scanner/ can be used to evaluate a web site before accessing the URL with a normal browser. The site URL Xray allows the viewing of a shortened URL's final destination before accessing it. The page at http://jsunpack.jeek.org/ offers a generic JavaScript unpacker.
General DNS information can be found at TCPIP Utils, DNS Dumpster, Dig Web Interface, Network Tools, DNSStuff, OnlyMyEmail, and Domain Tools. Sites offering DNS service would be DNS Advantage, Google, and OpenDNS. Sites to obtain location data via an IP address would be IP Address, InfobyIP, and IP2Location. Sites that offer DNS testing or reporting would be IntoDNS and UltraTools. WatchGuard has a reputation service at http://www.reputationauthority.org/. IP addresses can be checked for malware repuatation at https://threatcrowd.org/, https://talosintelligence.com/reputation_center, and http://threatminer.org/.
More networking links would be http://www.senderbase.org/, http://centralops.net/co/, http://securitywizardry.com/radar.htm, http://www.internettrafficreport.com/, http://www.dnsqueries.com/, and http://www.yougetsignal.com/ Sites to view the source code of a web site would include http://www.submitexpress.com/page-snooper.html, and http://www.webtoolhub.com/tn561362-html-source-viewer.aspx.
Sites to use to check for firewall or web proxies would be Hide My Ass and Proxify. A list of VPN services can be found here.
Sites to view XML files would be http://xmlgrid.net/, https://www.tutorialspoint.com/online_xml_editor.htm, and https://codebeautify.org/xmlviewer.
A list of "Live" CD downloads can be viewed here.
A test virus file can be found at Eicar. Third-party reviews of anti-virus applications can be found at http://www.av-comparatives.org/ and http://www.virusbtn.com/.
Resources for home networking can be found at http://www.practicallynetworked.com/.
Examples of online backup services would be Mosy, Carbonite, and Jungledisk. A site with additional information on backup services can be found at http://www.backupreview.info/.
The site Slipstick is a nice resource for Microsoft Outlook.
Sites to check bandwidth would include http://www.bandwidthplace.com/, http://www.dslreports.com/speedtest, http://www.speakeasy.net/speedtest/, and http://performance.toast.net/.
Information about digital cameras can be found at Digital Review, Imaging Resource, and Steve's Digicams. Information concerning the DVD format can be found at DVD FAQ and VideoHelp. I found an application at http://mp4cam2avi.sourceforge.net/ to convert MOV (QuickTime) video clips to AVI. Another site with conversion software is http://www.dvdvideosoft.com/. If media for a camera has issues, one potential tool that could help is called PhotoRec and it can be found here.
A site is available here that lists phone numbers for several companies, including software and hardware vendors. A nice list of software per task can be found at here.
Methods available to block spyware include to use a Hosts file such as at http://winhelp2002.mvps.org/hosts.htm. The site found here offers blocking data for several different applications. A site with lists of network ranges per country can be found here.
Digital certificates can be verified by sites such as https://www.digicert.com/help/ and https://www.ssllabs.com/ssltest/
