Remove Accountability Remove Authentication Remove Information Security
article thumbnail

Failures in Twitter’s Two-Factor Authentication System

Schneier on Security

Twitter is having intermittent problems with its two-factor authentication system: Not all users are having problems receiving SMS authentication codes, and those who rely on an authenticator app or physical authentication token to secure their Twitter account may not have reason to test the mechanism.

article thumbnail

A large botnet targets M365 accounts with password spraying attacks

Security Affairs

A botnet of 130,000+ devices is attacking Microsoft 365 accounts via password-spraying, bypassing MFA by exploiting basic authentication. SecurityScorecard researchers discovered a botnet of over 130,000 devices that is conducting password-spray attacks against Microsoft 365 (M365) accounts worldwide.

Passwords 120
Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

Change Healthcare Breach Hits 100M Americans

Krebs on Security

The chief information security officer for a large academic healthcare system affected by the breach told KrebsOnSecurity they participated in a call with the FBI and were told a third party partner managed to recover at least four terabytes of data that was exfiltrated from Change by the cybercriminal group. .”

article thumbnail

Microsoft sets all new accounts passwordless by default

Security Affairs

Microsoft announced that all new accounts will be “passwordless by default” to increase their level of security. Microsoft now makes all new accounts “passwordless by default,” enhancing protection against social engineering attacks, phishing, brute-force, and credential stuffing attacks.

article thumbnail

OpenAI bans ChatGPT accounts linked to Russian, Chinese cyber ops

Security Affairs

OpenAI banned ChatGPT accounts tied to Russian and Chinese hackers using the tool for malware, social media abuse, and U.S. OpenAI banned ChatGPT accounts that were used by Russian-speaking threat actors and two Chinese nation-state actors. We banned the OpenAI accounts used by this adversary.” satellite tech research.

article thumbnail

Not All MFA is Equal, and the Differences Matter a Lot

Daniel Miessler

People are starting to get the fact that texts (SMS) are a weak form of multi-factor authentication (MFA). In that post we talked about 8 levels of password security, starting from using shared and weak passwords and going all the way up to passwordless. It completely changes how authentication is done.

article thumbnail

Attackers exploited SonicWall SMA appliances since January 2025

Security Affairs

A remote authenticated attacker can exploit the flaw to inject arbitrary commands as a nobody user, which could potentially lead to arbitrary code execution. Threat actors were spotted exploiting the default super admin account (admin@LocalDomain), which often still uses the weak default password password. ” reads the advisory.

Passwords 106