Here is a selection of useful links by category.
All links have been checked by SystemTek at the time of publication.
Check if your e-mail address appears on any online dump – https://haveibeenpwned.com
A selection of free eBooks from Microsoft – https://mva.microsoft.com/ebooks
Database of Free / Open Access Online Computer Science Books, Textbooks, and Lecture Notes – http://www.freetechbooks.com/
Online Malware / Virus Checker
Upload a file to be checked for virus or malware – https://www.virustotal.com/#/home/upload
Online Website Security Checkers
Check a website for virus or malware – https://www.virustotal.com/#/home/url
Free Malware / Virus Removal Software
Sophos virus removal tool – https://secure2.sophos.com/en-us/products/free-tools/virus-removal-tool/free-download.aspx
Kaspersky virus removal tool – https://www.kaspersky.co.uk/downloads/thank-you/free-virus-removal-tool
AVG virus and removal tools – https://www.avg.com/en-gb/virus-removal
McAfee virus removal tools – https://home.mcafee.com/virusinfo/virus-removal-tools?ctst=1
Microsoft malicious software removal tool- https://www.microsoft.com/en-gb/download/malicious-software-removal-tool-details.aspx
PortQuiz (scan for open ports) – http://portquiz.net
Although we make every effort to ensure these links are accurate, up to date and relevant, we cannot take responsibility for pages maintained by external providers. If you come across any external links that don’t work, we would be grateful if you could report them to us here.