Tag Archives: impersonation

New Technique to Hijack Social Media Accounts

Post Syndicated from Bruce Schneier original https://www.schneier.com/blog/archives/2017/06/new_technique_t.html

Access Now has documented it being used against a Twitter user, but it also works against other social media accounts:

With the Doubleswitch attack, a hijacker takes control of a victim’s account through one of several attack vectors. People who have not enabled an app-based form of multifactor authentication for their accounts are especially vulnerable. For instance, an attacker could trick you into revealing your password through phishing. If you don’t have multifactor authentication, you lack a secondary line of defense. Once in control, the hijacker can then send messages and also subtly change your account information, including your username. The original username for your account is now available, allowing the hijacker to register for an account using that original username, while providing different login credentials.

Three news stories.

Forging Voice

Post Syndicated from Bruce Schneier original https://www.schneier.com/blog/archives/2017/05/forging_voice.html

LyreBird is a system that can accurately reproduce the voice of someone, given a large amount of sample inputs. It’s pretty good — listen to the demo here — and will only get better over time.

The applications for recorded-voice forgeries are obvious, but I think the larger security risk will be real-time forgery. Imagine the social engineering implications of an attacker on the telephone being able to impersonate someone the victim knows.

I don’t think we’re ready for this. We use people’s voices to authenticate them all the time, in all sorts of different ways.

EDITED TO ADD (5/11): This is from 2003 on the topic.