Category Archives: Security

Search through Pwned Passwords with PowerShell

Troy Hunt recently released over 300 million SHA1 hashes of passwords that his Have I Been Pwned website has been collecting. The site allows you to search the database to see if your passwords are included in those from many … Continue reading

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No more excuses, sort out your IT management basics!

I am fed up. This is a bit of a rant, but with good reason: companies and services that I and all of us pay good money for are not being managed properly. I say: Enough, no more excuses. The … Continue reading

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Find out what’s really happening in your network with LogRhythm NetMon Freemium

I recently discovered that LogRhythm, as well as very a full-featured Security Intelligence Platform and SIEM, also provide a “freemium” Network Monitor.┬áThe “freemium” refers to that fact that the software is 100% free, full-featured and not time-limited, but is capacity-limited. … Continue reading

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PowerShell Transcription to a file share breaks everything, and how to fix it

There’s been a bit of noise about PowerShell-based malware recently, and given the “assume breach” security mindset, I thought it was about time I enabled some of the PowerShell logging features in Windows. The basis behind “assume breach” is that … Continue reading

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Collect user and group SIDs and names from Active Directory

Ever found yourself looking through the Access Control List of a file/folder/share and mixed in along with the group names (hopefully not user names!) you see some SIDs? These look something like S-1-5-21-0123456789-0123456789-0123456789-0123. These are the Security IDs of deleted … Continue reading

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Change BitLocker Recovery Password with PowerShell

When BitLocker detects certain changes to the computer it’ll trigger Recovery Mode, and prompt for the Recovery Password. Likewise, you also need the recovery password if you need to access the encrypted disk from another machine or via Windows Recovery … Continue reading

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Posted in PowerShell, Security, Windows | Tagged , , , , , , , , , | 1 Comment

Don’t display last username if C drive encrypted with BitLocker

I’m moving from encrypting laptops with a third party disk encryption product to BitLocker. The third party product uses a pre-boot username & password prompt, and only boots into Windows if the credentials are correct. Users then have to log … Continue reading

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Extract private key from Microsoft CA-issued certificate

I wanted to use my internal Active Directory Certificate Services server to create a certificate for a Synology NAS. The Synology needs the private key and the certificate to be in separate files. I created the certificate by using the … Continue reading

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