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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...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added a recently disclosed security flaw in the UnRAR utility to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. Tracked as CVE-2022-30333 (CVSS score: 7.5), the issue concerns a path traversal vulnerability in the Unix versions of UnRAR that can be triggered upon extracting a maliciously crafted RAR archive. This means that an adversary could exploit the flaw to drop arbitrary files on a target system that has the utility installed simply by decompressing the file. The vulnerability was  revealed  by SonarSource researcher Simon Scannell in late June. "RARLAB UnRAR on Linux and UNIX contains a directory traversal vulnerability, allowing an attacker to write to files during an extract (unpack) operation," the agency  said  in an advisory. Although the flaw affects any Linux application that uses UnRAR to extract an archive file, a successful exploi...

As many as  121 new security flaws  were patched by Microsoft as part of its Patch Tuesday updates for the month of August, which also includes a fix for a Support Diagnostic Tool vulnerability that the company said is being actively exploited in the wild. Of the 121 bugs, 17 are rated Critical, 102 are rated Important, one is rated Moderate, and one is rated Low in severity. Two of the issues have been listed as publicly known at the time of the release. It's worth noting that the 121 security flaws are in addition to  25 shortcomings  the tech giant addressed in its Chromium-based Edge browser late last month and the previous week. Topping the list of patches is  CVE-2022-34713  (CVSS score: 7.8), a case of remote code execution affecting the Microsoft Windows Support Diagnostic Tool (MSDT), making it the second flaw in the same component after  Follina  (CVE-2022-30190) to be weaponized in  real-world attacks  within three months....

Customer engagement platform Twilio on Monday disclosed that a "sophisticated" threat actor gained "unauthorized access" using an SMS-based phishing campaign aimed at its staff to gain information on a "limited number" of accounts. The social-engineering attack was bent on stealing employee credentials, the company said, calling the as-yet-unidentified adversary "well-organized" and "methodical in their actions." The incident came to light on August 4. "This broad based attack against our employee base succeeded in fooling some employees into providing their credentials," it  said  in a notice. "The attackers then used the stolen credentials to gain access to some of our internal systems, where they were able to access certain customer data." The communications giant has  268,000 active customer accounts , and counts companies like Airbnb, Box, Dell, DoorDash, eBay, Glassdoor, Lyft, Salesforce, Stripe, Twitter, ...

The U.S. Treasury Department on Monday placed sanctions against crypto mixing service Tornado Cash, citing its use by the North Korea-backed Lazarus Group in the high-profile hacks of Ethereum bridges to launder and cash out the ill-gotten money. Tornado Cash, which allows users to move cryptocurrency assets between accounts by obfuscating their origin and destination, is estimated to have been used to launder more than $7.6 billion worth of virtual assets since its creation in 2019, the department said. Thefts, hacks, and fraud account for $1.54 billion of the total assets sent through the mixer, according to blockchain analytics firm  Elliptic . Crypto mixing is akin to shuffling digital currencies through a black box, blending a certain quantity of cryptocurrency in private pools before transferring it to its designated receivers for a fee. The aim is to make transactions anonymous and difficult to trace. "Despite public assurances otherwise, Tornado Cash has repeatedly f...

TL;DR: As weird as it might sound, seeing a few false positives reported by a security scanner is probably a good sign and certainly better than seeing none. Let's explain why. Introduction False positives have made a somewhat unexpected appearance in our lives in recent years. I am, of course, referring to the COVID-19 pandemic, which required massive testing campaigns in order to control the spread of the virus. For the record, a false positive is a result that appears positive (for COVID-19 in our case), where it is actually negative (the person is not infected). More commonly, we speak of false alarms. In computer security, we are also often confronted with false positives. Ask the security team behind any SIEM what their biggest operational challenge is, and chances are that false positives will be mentioned. A recent  report  estimates that as much as 20% of all the alerts received by security professionals are false positives, making it a big source of fatigue. Yet...

In what's yet another instance of malicious packages creeping into public code repositories, 10 modules have been removed from the Python Package Index (PyPI) for their ability to harvest critical data points such as passwords and API tokens. The packages "install info-stealers that enable attackers to steal developer's private data and personal credentials," Israeli cybersecurity firm Check Point  said  in a Monday report. A short summary of the offending packages is below - Ascii2text , which downloads a nefarious script that gathers passwords stored in web browsers such as Google Chrome, Microsoft Edge, Brave, Opera, and Yandex Browser Pyg-utils, Pymocks, and PyProto2 , which are designed to  steal users' AWS credentials Test-async and Zlibsrc , which download and execute malicious code during installation Free-net-vpn, Free-net-vpn2, and WINRPCexploit , which steal user credentials and environment variables, and Browserdiv , which are capable of coll...

Over a dozen military-industrial complex enterprises and public institutions in Afghanistan and Europe have come under a wave of targeted attacks since January 2022 to steal confidential data by simultaneously making use of six different backdoors. Russian cybersecurity firm Kaspersky  attributed  the attacks "with a high degree of confidence" to a China-linked threat actor tracked by  Proofpoint  as  TA428 , citing overlaps in tactics, techniques, and procedures (TTPs).  TA428, also known by the names Bronze Dudley, Temp.Hex, and Vicious Panda, has a  history  of striking entities in Ukraine, Russia, Belarus, and Mongolia. It's believed to share connections with another hacking group called Mustang Panda (aka Bronze President). Targets of the latest cyber espionage campaign included industrial plants, design bureaus and research institutes, government agencies, ministries and departments in several East European countries and Afghanistan. A...

A new botnet named Orchard has been observed using Bitcoin creator Satoshi Nakamoto's account transaction information to generate domain names to conceal its command-and-control (C2) infrastructure. "Because of the uncertainty of Bitcoin transactions, this technique is more unpredictable than using the common time-generated [ domain generation algorithms ], and thus more difficult to defend against," researchers from Qihoo 360's Netlab security team said in a Friday write-up. Orchard is said to have undergone three revisions since February 2021, with the botnet primarily used to deploy additional payloads onto a victim's machine and execute commands received from the C2 server. It's also designed to upload device and user information as well as infect USB storage devices to propagate the malware. Netlab's analysis shows that over 3,000 hosts have been enslaved by the malware to date, most of them located in China. Orchard has also been subjected to ...

A few days ago, a friend and I were having a rather engaging conversation that sparked my excitement. We were discussing my prospects of becoming a red teamer as a natural career progression. The reason I got stirred up is not that I want to change either my job or my position, as I am a happy camper being part of Cymulate's blue team. What upset me was that my friend could not grasp the idea that I wanted to keep working as a blue teamer because, as far as he was concerned, the only natural progression is to move to the red team.  Red teams include many roles ranging from penetration testers to attackers and exploit developers. These roles attract most of the buzz, and the many certifications revolving around these roles (OSCP, OSEP, CEH) make them seem fancy. Movies usually make hackers the heroes, while typically ignoring the defending side, the complexities and challenges of blue teamers' roles are far less known. While blue teams' defending roles might not sound as...

A sophisticated scam-as-a-service operation dubbed Classiscam has now infiltrated into Singapore, more than 1.5 years after  expanding to Europe . "Scammers posing as legitimate buyers approach sellers with the request to purchase goods from their listings and the ultimate aim of stealing payment data," Group-IB  said  in a report shared with The Hacker News. The cybersecurity firm called the operators a "well-coordinated and technologically advanced scammer criminal network." Classiscam refers to a  Russia-based cybercrime operation  that was first recorded in summer 2019 but only came under spotlight a year later coinciding with a surge in activity owing to an increase in online shopping in the aftermath of COVID-19 outbreak. Called the  most widely used fraud scheme  during the pandemic, Classiscam targets people who use marketplaces and services relating to property rentals, hotel bookings, online bank transfers, online retail, ride-sharing, ...

Facebook parent company Meta disclosed that it took action against two espionage operations in South Asia that leveraged its social media platforms to distribute malware to potential targets. The first set of activities is what the company described as "persistent and well-resourced" and undertaken by a hacking group tracked under the moniker Bitter APT (aka APT-C-08 or T-APT-17) targeting individuals in New Zealand, India, Pakistan, and the U.K. "Bitter used various malicious tactics to target people online with social engineering and infect their devices with malware," Meta  said  in its Quarterly Adversarial Threat Report. "They used a mix of link-shortening services, malicious domains, compromised websites, and third-party hosting providers to distribute their malware." The attacks involved the threat actor creating fictitious personas on the platform, masquerading as attractive young women in a bid to build trust with targets and lure them into cl...

A new IoT botnet malware dubbed RapperBot has been observed rapidly evolving its capabilities since it was first discovered in mid-June 2022. "This family borrows heavily from the original  Mirai source code , but what separates it from other IoT malware families is its built-in capability to brute force credentials and gain access to SSH servers instead of Telnet as implemented in Mirai," Fortinet FortiGuard Labs  said  in a report. The malware, which gets its name from an embedded URL to a YouTube rap music video in an earlier version, is said to have amassed a growing collection of compromised SSH servers, with over 3,500 unique IP addresses used to scan and brute-force their way into the servers. RapperBot's current implementation also delineates it from Mirai, allowing it to primarily function as an SSH brute-force tool with limited capabilities to carry out distributed denial-of-service (DDoS) attacks. The deviation from traditional Mirai behavior is further ...

Twitter on Friday revealed that a now-patched zero-day bug was used to link phone numbers and emails to user accounts on the social media platform. "As a result of the vulnerability, if someone submitted an email address or phone number to Twitter's systems, Twitter's systems would tell the person what Twitter account the submitted email addresses or phone number was associated with, if any," the company  said  in an advisory. Twitter said the bug, which it was  made aware  of in January 2022, stemmed from a code change introduced in June 2021. No passwords were exposed as a result of the incident. The six-month delay in making this public stems from new evidence last month that an unidentified actor had potentially taken advantage of the flaw before the fix to scrape user information and sell it for profit on  Breach Forums . Although Twitter didn't reveal the exact number of impacted users, the forum post made by the threat actor shows that the flaw was ...

Slack said it took the step of resetting passwords for about 0.5% of its users after a flaw exposed salted password hashes when creating or revoking shared invitation links for workspaces. "When a user performed either of these actions, Slack transmitted a hashed version of their password to other workspace members," the enterprise communication and collaboration platform  said  in an alert on 4th August. Hashing refers to a cryptographic technique that transforms any form of data into a fixed-size output (called a hash value or simply hash).  Salting  is designed to add an extra security layer to the hashing process to make it resistant to brute-force attempts. The Salesforce-owned company, which reported more than  12 million daily active users  in September 2019, didn't reveal the exact  hashing algorithm  used to safeguard the passwords. The bug is said to have impacted all users who created or revoked shared invitation links between 17 ...