The Privacy BlogPrivacy, Security, Cryptography, and Anonymity

TAG | breaches

Point of sale checkout counterThe point of sales (POS) breaches at Hilton, and Starwood before that, suggest that a group of hackers is specifically targeting hotels, probably because most travelers have above average income. It should also make us brace for a likely wave of further POS breaches in many other businesses during the holiday shopping season.

It really makes me wish that more merchants accepted secure payment tools like Apple Pay, or even that more than a small fraction accepted the new chip and signature cards.

Hilton Data Breach Focuses Attention On Growing POS Malware Threat

Lance Cottrell is the Founder and Chief Scientist of Anonymizer. Follow me on Facebook, Twitter, and Google+.




Hola VPN Service Security Train Wreck


Hola logo unhappy

The Hola peer to peer VPN service suffered a number of very damaging security revelations today. Hola claims that there are (or were) about 45 million active users of the service. (more…)

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Engineers at Golden Frog recently discovered that Cricket wireless was automatically disabling their email encryption.

It is not at all clear why they were doing this, but we do know how. When an email client attempts to make a secure connection to a server, it sends a STARTTLS command. If the server never sees the STARTTLS, then it assumes you just wanted an insecure connection. (more…)

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Two new attacks on Tor


Tor webpage

Two new attacks on Tor were recently announced.

The first involves using an exit node to automatically modify software patches to include malware. This one is being seen in the wild already. (more…)

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Unknown known

Your Anonymous Posts to Secret Aren’t Anonymous After All | Threat Level | WIRED

This article describes a clever attack against Secret, the “anonymous” secret sharing app.

Their technique allows the attacker to isolate just a single target, so any posts seen are known to be from them. The company is working on detecting and preventing this attack, but it is a hard problem.

In general, any anonymity system needs to blend the activity of a number of users so that any observed activity could have originated from any of them. For effective anonymity the number needs to be large. Just pulling from the friends in my address book who also use Secret is way too small a group.

Lance Cottrell is the Founder and Chief Scientist of Anonymizer. Follow me on Facebook, Twitter, and Google+.

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