- For website secuirty, see Web development tools > Security
- 5 Ways to Generate and Verify MD5 SHA Checksum of Any File in Windows 10
- Have I Been Pwned - Check to see if your email address appears in any database that's been compromised.
Fake security programs
These programs claim they will protect your computer. Instead they actually are malware.
- Antivirus 2009
- PC MightyMax
- Windows Stability Center
- Windows 7 Firewall Control - Windows 7 Firewall Control Free lets you tell the Windows firewall to block applications from making outbound connections to the Internet, or to customize the way they make those connections. For Windows 7 and Vista, 32 and 64 bit editions.
Free antivirus software
- AdwCleaner - AdwCleaner is a free removal tool for Adware, PUP/LPI (Potentially Undesirable Program), Toolbars, Hijacker (hijack of the browser's homepage).
- Maximum PC magazine: How to Remove Windows Malware for Free (2015) - Link invalid
- Maximum PC magazine's Ultimate Malware Removal Guide - Link invalid
- Maximum PC magazine 2013: Virus Protection Guide - Link invalid
- Malwarebytes' Anti-Malware
- PC Gamer: How to Remove Windows Malware for Free
- Microsoft Windows Malicious Software Removal Tool - The Microsoft Windows Malicious Software Removal Tool checks computers running Windows 7, Windows Vista, Windows XP, Windows 2000, and Windows Server 2003 for infections by specific, prevalent malicious software — including Blaster, Sasser, and Mydoom — and helps remove any infection found.
- Microsoft Standalone System Sweeper Beta - A recovery tool that can help you start an infected PC and perform an offline scan to help identify and remove rootkits and other advanced malware. In addition, Microsoft Standalone System Sweeper Beta can be used if you cannot install or start an antivirus solution on your PC, or if the installed solution can’t detect or remove malware on your PC.
- Anti-rootkit utility TDSSKiller - Kaspersky Lab has developed the TDSSKiller utility that allows removing rootkits.
- RKill - RKill is a program that was developed at BleepingComputer.com that attempts to terminate known malware processes so that your normal security software can then run and clean your computer of infections.
Online antivirus solutions
- HouseCall - Free Online Virus Scan - Trend Micro HouseCall can quickly identify and fix a wide range of threats including viruses, worms, Trojans, and spyware.
- Microsoft Safety Scanner - The Microsoft Safety Scanner is a free downloadable security tool that provides on-demand scanning and helps remove viruses, spyware, and other malicious software. It works with your existing antivirus software. (This replaces the old Microsoft Windows Live OneCare safety scan.
- VirusTotal - Virustotal is a service that analyzes suspicious files and facilitates the quick detection of viruses, worms, trojans, and all kinds of malware detected by antivirus engines.
- Ghostery - Ghostery allows you to block scripts from companies that you don't trust, delete local shared objects, and even block images and iframes. Ghostery puts your web privacy back in your hands.
- Secunia Personal Software Inspector (PSI) - The Secunia PSI is a free security tool designed to detect vulnerable and out-dated programs and plug-ins which expose your PC to attacks.
- CryptoPrevent - CryptoPrevent is an Anti-Virus/Security Software Supplement, originally designed to prevent infection from the CryptoLocker threat which emerged in late 2013. Since that time, CryptoPrevent has grown into a robust solution, providing protection against a wide range of ransomware and other malware.
- Malwarebytes Anti-Exploit
- Microsoft Enhanced Mitigation Experience Toolkit (EMET) - EMET is a utility that helps prevent vulnerabilities in software from being successfully exploited. Not considered necessary for Windows 10, as similar defenses are built in.
Disable the SMBv1 protocol
In the interests of implementing a comprehensive, multi-layer security policy, Microsoft recommends that you disable the SMBv1 protocol completely. The world has already moved on to SMBv3, and there's no excuse for continuing to let that old and horribly insecure protocol run on your network.
To permanently remove SMBv1 support from Windows:
Open Control Panel (just start typing Control in the search box to find its shortcut quickly). Click Programs, and then click Turn Windows features on or off (under the Programs heading). Clear the check box for SMB 1.0/CIFS File Sharing Support. That's it; you're protected.