Category Archives: authentication

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When Security Locks You Out of Everything

June 28 2022 By Bruce Schneier in authentication, cybersecurity, Security

Thought experiment story of someone who lost everything in a house fire, and now can’t log into anything:

But to get into my cloud, I need my password and...

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Twitter Used Two-Factor Login Details for Ad Targeting

June 9 2022 By Bruce Schneier in authentication, Privacy, Security, surveillance, Twitter

Twitter was fined $150 million for using phone numbers and email addresses collected for two-factor authentication for ad targeting.

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Microsoft patches the Patch Tuesday patch that broke authentication

May 20 2022 By Paul Ducklin in authentication, Microsoft, Security, Vulnerability, Windows

Remember the good old days when security patches rarely needed patches? Because security patches themlelves were rare enough anyway?

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Problems with Multifactor Authentication

October 21 2021 By Bruce Schneier in authentication, Phishing, Ransomware, Security, Social Engineering

Roger Grimes on why multifactor authentication isn’t a panacea:

The first time I heard of this issue was from a Midwest CEO. His organization had been hit by ransomware...

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Using “Master Faces” to Bypass Face-Recognition Authenticating Systems

August 6 2021 By Bruce Schneier in authentication, Security

Fascinating research: “Generating Master Faces for Dictionary Attacks with a Network-Assisted Latent Space Evolution.”

Abstract: A master face is a face image that passes face-based identity-authentication for a large...

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Backdoor Added — But Found — in PHP

April 9 2021 By Bruce Schneier in authentication, Security

Unknown hackers attempted to add a backdoor to the PHP source code. It was two malicious commits, with the subject “fix typo” and the names of known PHP developers...

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Easy SMS Hijacking

March 19 2021 By Bruce Schneier in authentication, Cybercrime, Security, SMS, vulnerabilities

Vice is reporting on a cell phone vulnerability caused by commercial SMS services. One of the things these services permit is text message forwarding. It turns out that...

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On the Insecurity of ES&S Voting Machines’ Hash Code

March 16 2021 By Bruce Schneier in authentication, Security

Andrew Appel and Susan Greenhalgh have a blog post on the insecurity of ES&S’s software authentication system:

It turns out that ES&S has bugs in their hash-code checker: ...

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Medieval Security Techniques

February 12 2021 By Bruce Schneier in authentication, Security

Sonja Drummer describes (with photographs) two medieval security techniques. The first is a for authentication: a document has been cut in half with an irregular pattern, so that the...

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NSA on Authentication Hacks (Related to SolarWinds Breach)

December 18 2020 By Bruce Schneier in authentication, nsa, Security

The NSA has published an advisory outlining how “malicious cyber actors” are “are manipulating trust in federated authentication environments to access protected data in the cloud.” This is...

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