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Twilio, which earlier this month became a  sophisticated phishing attack , disclosed last week that the threat actors also managed to gain access to the accounts of 93 individual users of its Authy two-factor authentication (2FA) service. The communication tools company  said  the unauthorized access made it possible for the adversary to register additional devices to those accounts. It has since identified and removed the illegitimately added devices from the impacted accounts. Authy, acquired by Twilio in February 2015, allows  safeguarding online accounts  with a second security layer to prevent account takeover attacks. It's estimated to have nearly 75 million users. Twilio further noted its investigation as of August 24, 2022, turned up 163 affected customers, up from 125 it reported on August 10, whose accounts it said were hacked for a limited period of time. Besides Twilio, the sprawling campaign, dubbed  0ktapus  by Group-IB, is believed...

Communication services provider Twilio this week disclosed that it experienced another "brief security incident" in June 2022 perpetrated by the same threat actor behind the  August hack  that resulted in unauthorized access of customer information. The security event occurred on June 29, 2022, the company said in an updated advisory shared this week, as part of its probe into the digital break-in. "In the June incident, a Twilio employee was socially engineered through voice phishing (or 'vishing') to provide their credentials, and the malicious actor was able to access customer contact information for a limited number of customers," Twilio  said . It further said the access gained following the successful attack was identified and thwarted within 12 hours, and that it had alerted impacted customers on July 2, 2022. The San Francisco-based firm did not reveal the exact number of customers impacted by the June incident, and why the disclosure was made ...

Uber, in an update, said there is "no evidence" that users' private information was compromised in a breach of its internal computer systems that was discovered late Thursday. "We have no evidence that the incident involved access to sensitive user data (like trip history)," the company  said . "All of our services including Uber, Uber Eats, Uber Freight, and the Uber Driver app are operational." The ride-hailing company also said it's brought back online all the internal software tools it took down previously as a precaution, reiterating it's notified law enforcement of the matter. It's not immediately clear if the incident resulted in the theft of any other information or how long the intruder was inside Uber's network. Uber has not provided more specifics of how the incident played out beyond saying its investigation and response efforts are ongoing. But independent security researcher Bill Demirkapi characterized the company...

Welcome to this week's Threatsday Bulletin —your Thursday check-in on the latest twists and turns in cybersecurity and hacking. The digital threat landscape never stands still. One week it's a critical zero-day, the next it's a wave of phishing lures or a state-backed disinformation push. Each headline is a reminder that the rules keep changing and that defenders—whether you're protecting a global enterprise or your own personal data—need to keep moving just as fast. In this edition we unpack fresh exploits, high-profile arrests, and the newest tactics cybercriminals are testing right now. Grab a coffee, take five minutes, and get the key insights that help you stay a step ahead of the next breach. Firmware fights back SonicWall Releases SMA 100 Firmware Update to Remove Rootkit SonicWall has released a firmware update that it said will help customers remove rootkit malware deployed in attacks targeting SMA 100 series devices. "S...

In the wake of high-profile attacks on UK retailers Marks & Spencer and Co-op, Scattered Spider has been all over the media, with coverage spilling over into the mainstream news due to the severity of the disruption caused — currently looking like hundreds of millions in lost profits for M&S alone.  This coverage is extremely valuable for the cybersecurity community as it raises awareness of the battles that security teams are fighting every day. But it's also created a lot of noise that can make it tricky to understand the big picture.  The headline story from the recent campaign against UK retailers is the use of help desk scams. This typically involves the attacker calling up a company's help desk with some level of information — at minimum, PII that allows them to impersonate their victim, and sometimes a password, leaning heavily on their native English-speaking abilities to trick the help desk operator into giving them access to a user account.  Help Des...

Cloud communications provider Twilio has revealed that unidentified threat actors took advantage of an unauthenticated endpoint in Authy to identify data associated with Authy accounts, including users' cell phone numbers. The company said it took steps to secure the endpoint to no longer accept unauthenticated requests. The development comes days after an online persona named ShinyHunters published on BreachForums a database comprising 33 million phone numbers allegedly pulled from Authy accounts. Authy, owned by Twilio since 2015, is a popular two-factor authentication (2FA) app that adds an additional layer of account security. "We have seen no evidence that the threat actors obtained access to Twilio's systems or other sensitive data," it said in a July 1, 2024, security alert. But out of an abundance of caution, it's recommending that users upgrade their Android (version 25.1.0 or later) and iOS (version 26.1.0 or later) apps to the latest version. It...

Popular end-to-end encrypted messaging service Signal on Monday disclosed the cyberattack aimed at Twilio earlier this month may have exposed the phone numbers of roughly 1,900 users. "For about 1,900 users, an attacker could have attempted to re-register their number to another device or learned that their number was registered to Signal," the company  said . "All users can rest assured that their message history, contact lists, profile information, whom they'd blocked, and other personal data remain private and secure and were not affected." Signal, which uses Twilio to send SMS verification codes to users registering with the app, said it's in the process of alerting the affected users directly and prompting them to re-register the service on their devices. The development comes less than a week after Twilio  revealed  that data associated with about 125 customer accounts were accessed by malicious actors through a phishing attack that duped the comp...

Web infrastructure company Cloudflare on Tuesday disclosed at least 76 employees and their family members received text messages on their personal and work phones bearing similar characteristics as that of the sophisticated  phishing attack against Twilio . The attack, which transpired around the same time Twilio was targeted, came from four phone numbers associated with T-Mobile-issued SIM cards and was ultimately unsuccessful. The text messages pointed to a seemingly legitimate domain containing the keywords "Cloudflare" and "Okta" in an attempt to deceive the employees into handing over their credentials. The wave of over 100 smishing messages commenced less than 40 minutes after the rogue domain was registered via Porkbun, the company noted, adding the phishing page was designed to relay the credentials entered by unsuspecting users to the attacker via Telegram in real-time. This also meant that the attack could defeat 2FA roadblocks, as the Time-based On...

An emerging Python-based credential harvester and a hacking tool named Legion is being marketed via Telegram as a way for threat actors to break into various online services for further exploitation. Legion, according to  Cado Labs , includes modules to enumerate vulnerable SMTP servers, conduct remote code execution (RCE) attacks, exploit unpatched versions of Apache, and brute-force cPanel and WebHost Manager (WHM) accounts. The malware is said to bear similarities to another malware family called AndroxGh0st that was first documented by cloud security services provider Lacework in December 2022. Cybersecurity firm SentinelOne, in an analysis published late last month, revealed that AndroxGh0st is part of a comprehensive toolset called AlienFox that's offered to threat actors to steal API keys and secrets from cloud services. "Legion appears to be part of an emerging generation of cloud-focused credential harvester/spam utilities," security researcher Matt Muir...

An unknown threat actor has been observed publishing typosquat packages to the Python Package Index (PyPI) repository for nearly six months with an aim to deliver malware capable of gaining persistence, stealing sensitive data, and accessing cryptocurrency wallets for financial gain. The 27 packages, which masqueraded as popular legitimate Python libraries, attracted thousands of downloads, Checkmarx said in a new report. A majority of the downloads originated from the U.S., China, France, Hong Kong, Germany, Russia, Ireland, Singapore, the U.K., and Japan. "A defining characteristic of this attack was the utilization of steganography to hide a malicious payload within an innocent-looking image file, which increased the stealthiness of the attack," the software supply chain security firm  said . Some of the packages are pyefflorer, pyminor, pyowler, pystallerer, pystob, and pywool, the last of which was planted on May 13, 2023. A common denominator to these packages is t...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two security flaws to its Known Exploited Vulnerabilities ( KEV ) catalog, based on evidence of active exploitation. The vulnerabilities are listed below - CVE-2012-4792 (CVSS score: 9.3) - Microsoft Internet Explorer Use-After-Free Vulnerability CVE-2024-39891 (CVSS score: 5.3) - Twilio Authy Information Disclosure Vulnerability CVE-2012-4792 is a decade-old use-after-free vulnerability in Internet Explorer that could allow a remote attacker to execute arbitrary code via a specially crafted site. It's currently not clear if the flaw has been subjected to renewed exploitation attempts, although it was abused as part of watering hole attacks targeting the Council on Foreign Relations (CFR) and Capstone Turbine Corporation websites back in December 2012. On the other hand, CVE-2024-39891 refers to an information disclosure bug in an unauthenticated endpoint that could be exploited to "accept ...