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T-Mobile employees from around the country are reportedly receiving text messages offering them cash in exchange for swapping SIMs. SIM swapping is when cybercriminals trick a cellular service provider into switching a victim's service to a SIM card that they control, essentially hijacking the victim's phone number and gaining access to two-factor authentication codes. From the Mobile Report: The texts offer the employee $300 per SIM swap, and asks the worker to contact them on telegram. The texts all come from a variety of different numbers across multiple area codes, making it more difficult to block. The text also claims they acquired the employee's number "from the T-Mo employee directory." If true, it could mean T-Mobile's employee directory, with contact numbers, has somehow been accessed. It's also possible the bad actor has live/current access to this data, though we consider that less likely due to the fact that some impacted people are former employees who have not worked at the company in months. Still, the biggest issue here is how this person (or multiple people) obtained the employee phone numbers. We're not sure yet which employees are impacted, but based on comments online it seems at least a few third-party employees are affected, and we've independently confirmed current corporate employees have also received the message. Though we can't say for certain, this likely means the information is not the same data as what was leaked during the Connectivity Source breach [from September]. We can't, however, eliminate that possibility. As mentioned, there are reports that some of the contacted people are former employees, and haven't been employed at T-Mobile for months, so the information being acted upon is likely a few months old at the very least. That being said, we're pretty confident based on corporate employees being included that this is a different source of data being used.

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T-Mobile Employees Across The Country Receive Cash Offers To Illegally Swap SIMs: Report

Roku has made two-factor authentication (2FA) mandatory for all users following two credential stuffing attacks that compromised approximately 591,000 customer accounts and led to unauthorized purchases in fewer than 400 cases. The Register reports: Credential stuffing and password spraying are both fairly similar types of brute force attacks, but the former uses known pairs of credentials (usernames and passwords). The latter simply spams common passwords at known usernames in the hope one of them leads to an authenticated session. "There is no indication that Roku was the source of the account credentials used in these attacks or that Roku's systems were compromised in either incident," it said in an update to customers. "Rather, it is likely that login credentials used in these attacks were taken from another source, like another online account, where the affected users may have used the same credentials." All accounts now require 2FA to be implemented, whether they were affected by the wave of compromises or not. Roku has more than 80 million active accounts, so only a minority were affected, and these have all been issued mandatory password resets. Compromised or not, all users are encouraged to create a strong, unique password for their accounts, consisting of at least eight characters, including a mix of numbers, symbols, and letter cases. [...] Roku also asked users to remain vigilant to suspicious activity regarding its service, such as phishing emails or clicking on dodgy links to rest passwords -- the usual stuff. "In closing, we sincerely regret that these incidents occurred and any disruption they may have caused," it said. "Your account security is a top priority, and we are committed to protecting your Roku account."

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Roku Makes 2FA Mandatory For All After Nearly 600K Accounts Pwned

The U.S. government is warning that smart locks securing entry to an estimated 50,000 dwellings nationwide contain hard-coded credentials that can be used to remotely open any of the locks. Krebs on SecurityL: The lock's maker Chirp Systems remains unresponsive, even though it was first notified about the critical weakness in March 2021. Meanwhile, Chirp's parent company, RealPage, Inc., is being sued by multiple U.S. states for allegedly colluding with landlords to illegally raise rents. On March 7, 2024, the U.S. Cybersecurity & Infrastructure Security Agency (CISA) warned about a remotely exploitable vulnerability with "low attack complexity" in Chirp Systems smart locks. "Chirp Access improperly stores credentials within its source code, potentially exposing sensitive information to unauthorized access," CISA's alert warned, assigning the bug a CVSS (badness) rating of 9.1 (out of a possible 10). "Chirp Systems has not responded to requests to work with CISA to mitigate this vulnerability." Matt Brown, the researcher CISA credits with reporting the flaw, is a senior systems development engineer at Amazon Web Services. Brown said he discovered the weakness and reported it to Chirp in March 2021, after the company that manages his apartment building started using Chirp smart locks and told everyone to install Chirp's app to get in and out of their apartments.

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Crickets From Chirp Systems in Smart Lock Key Leak

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An anonymous reader shares a report: Shakeeb Ahmed, a cybersecurity engineer convicted of stealing around $12 million in crypto, was sentenced on Friday to three years in prison. In a press release, the U.S. Attorney for the Southern District of New York announced the sentence. Ahmed was accused of hacking into two cryptocurrency exchanges, and stealing around $12 million in crypto, according to prosecutors. Adam Schwartz and Bradley Bondi, the lawyers representing Ahmed, did not immediately respond to a request for comment. When Ahmed was arrested last year, the authorities described him as "a senior security engineer for an international technology company." His LinkedIn profile said he previously worked at Amazon. But he wasn't working there at the time of his arrest, an Amazon spokesperson told TechCrunch. While the name of one of his victims was never disclosed, Ahmed reportedly hacked into Crema Finance, a Solana-based crypto exchange, in early July 2022.

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Security Engineer Jailed For 3 Years For $12M Crypto Hacks

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