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Russia-linked Sandworm APT compromised 11 Ukrainian telecommunications providers

Security Affairs

Russia-linked APT group Sandworm has hacked eleven telecommunication service providers in Ukraine between since May 2023. The Russia-linked APT group Sandworm (UAC-0165) has compromised eleven telecommunication service providers in Ukraine between May and September 2023, reported the Ukraine’s Computer Emergency Response Team (CERT-UA).

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Can We Stop Pretending SMS Is Secure Now?

Krebs on Security

Lucky225 showed how anyone could do the same after creating an account at a service called Sakari , a company that helps celebrities and businesses do SMS marketing and mass messaging. From there, the attacker can reset the password of any account which uses that phone number for password reset links.

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Store manager admits SIM swapping his customers

Malwarebytes

A 42-year-old manager at an unnamed telecommunications company has admitted SIM swapping customers at his store. For that reason, SIM swapping can be used to get around two-factor authentication (2FA) codes sent by SMS message. He was paid in Bitcoin, which was traced back to Katz’s cryptocurrency account.

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230K individuals impacted by a data breach suffered by Telco provider Tangerine

Security Affairs

Australian telecommunications provider Tangerine disclosed a data breach that impacted roughly 230,000 individuals. The telecommunications provider pointed out that no financial information (credit or debit card numbers, banking details) has been compromised. Access to the affected legacy database has also been closed.”continues

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AT&T confirms 73 million people affected by data breach

Malwarebytes

Telecommunications giant AT&T has finally confirmed that 73 million current and former customers have been caught up in a massive dark web data leak. million current AT&T account holders and approximately 65.4 million former account holders. Change your password. Enable two-factor authentication (2FA).

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China-linked threat actors have breached telcos and network service providers

Security Affairs

China-linked threat actors have breached telecommunications companies and network service providers to spy on the traffic and steal data. US NSA, CISA, and the FBI published a joint cybersecurity advisory to warn that China-linked threat actors have breached telecommunications companies and network service providers.

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Why & Where You Should You Plant Your Flag

Krebs on Security

Several stories here have highlighted the importance of creating accounts online tied to your various identity, financial and communications services before identity thieves do it for you. ” In short, although you may not be required to create online accounts to manage your affairs at your ISP, the U.S. .”