Sysinternals Security Utilities

AccessChk
This tool shows you the level of access the user or group you specify has to files, Registry keys or Windows services.

AccessEnum
This simple yet powerful security tool shows you who has what access to directories, files and Registry keys on your systems. Use it to find holes in your permissions.

Autologon
Bypass password screen during logon.

Autoruns
See what programs are configured to startup automatically when your system boots and you log in. Autoruns also shows you the full list of Registry and file locations where applications can configure auto-start settings.

LogonSessions
List active logon sessions

Process Explorer
Find out what files, registry keys and other objects processes have open, which DLLs they have loaded, and more. This uniquely powerful utility will even show you who owns each process.

PsExec
Execute processes with limited-user rights.

PsLoggedOn
Show users logged on to a system.

PsLogList
Dump event log records.

PsTools
The PsTools suite includes command-line utilities for listing the processes running on local or remote computers, running processes remotely, rebooting computers, dumping event logs, and more.

Rootkit Revealer
RootkitRevealer is an advanced rootkit detection utility.

SDelete
Securely overwrite your sensitive files and cleanse your free space of previously deleted files using this DoD-compliant secure delete program.

ShareEnum
Scan file shares on your network and view their security settings to close security holes.

ShellRunas
Launch programs as a different user via a convenient shell context-menu entry.

Sigcheck
Dump file version information and verify that images on your system are digitally signed.

Sysmon
Monitors and reports key system activity via the Windows event log.