www.mywot.com/en/download

This a browser plugin that warns you of unsafe sites and actively prevents you going to them. This is free and an excellent first line defence. The WOT add-on shows you which websites you can trust based on other users' experiences. Our safe surfing br ...

haveibeenpwned.com

Have I been pwned? allows you to search across multiple data breaches to see if your email addresses has been compromised.

www.getsafeonline.org

A website on staying safe on the internet, sponsored by big business and HM Goverment.

www.itsafe.gov.uk

We provide home users and small businesses with warnings and news about computer security problems. ITsafe is a free UK government service.

staysafeonline.org

Stay Safe Online provides free and non-technical cyber security and safety resources to the public, so consumers, small businesses and educators have the know how to avoid cyber crime.

www.whatsmypass.com

A site dedicated to recovering passwords from software and hardware including laptop bios recovery. There is a lot of free stuff and some paid for services but all are helpful. Password recovery tools and info.

www.microsoft.com/protect/default.aspx

A site by microsoft giving you advise on password, identity protection and various other security methods for going online and your PC.

openwall.com

Information Security software for open computing environments, related publications, and professional services.

This site also provides large word lists for brute force attacks.

www.av-test.org

Provides independent comparative tests and reviews for antivirus software, antimalware tools, and security software for Windows, Mac, and Android.

www.crypto101.io

Crypto 101 is an introductory course on cryptography, freely available for programmers of all ages and skill levels.

Start to finish

Comes with everything you need to understand complete systems such as SSL/TLS: block c ...

securityinabox.org

Security in-a-Box is a guide to digital security for activists and human rights defenders throughout the world.

If you're new to digital security, the Tactics Guides cover the basic principles, including advice on how to use social networking p ...

www.cyberstreetwise.com

Find out about easy steps you can take to protect your home or business from cyber crime by visiting Cyber Street today.

antiphishing.org

The APWG is the global industry, law enforcement, and government coalition focused on unifying the global response to electronic crime through development of data resources, data standards and model response protocols and systems for private and public ...

www.stopbadware.org

A nonprofit organization that makes the Web safer through the prevention, mitigation, and remediation of badware websites.

Badware poses a serious threat to the integrity of the Web and the security of the people who use it. StopBadware works w ...

reatogo.de

You can download this easy to use BartPe system and loads of extra plugins.

www.msexchange.org/tutorials/Planning-First-Exchange-Server....

This is a detailed article on how to setup a microsoft Exchange server.

www.techrepublic.com/article/how-do-i-manage-disk-quotas-on-...

how to manage and set disk quotas on windows server 2003

www.msexchange.org

Microsoft Exchange Server portal for information of interest to corporate users of Microsoft Exchange and those who are just interested. Contains software, information, faqs, news, forums and more.

www.virtualizationadmin.com

Virtualization Resource portal for information about all types and aspects of virtualization, from virtualizing your network to tuning your virtual infrastructure. Contains comprehensive product directories, articles and tutorials, FAQs, Virtualization ...

www.manageengine.com/free-ping-tool/free-ping-tool-index.htm...

ManageEngine's Free Tools portfolio touches almost every IT domain from physical network devices to virtual servers in the cloud. There are over 40 free tools that include 5 mobile apps. These lightweight tools are easy to install, user friendly, and t ...