The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added a medium-severity security flaw impacting Roundcube email software to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation.
The issue, tracked as CVE-2023-43770 (CVSS score: 6.1), relates to a cross-site scripting (XSS) flaw that stems from the handling of
A now-patched security flaw in Microsoft Outlook could be exploited by threat actors to access NT LAN Manager (NTLM) v2 hashed passwords when opening a specially crafted file.
The issue, tracked as CVE-2023-35636 (CVSS score: 6.5), was addressed by the tech giant as part of its Patch Tuesday updates for December 2023.
"In an email attack scenario, an attacker could exploit the
Microsoft on Friday revealed that it was the target of a nation-state attack on its corporate systems that resulted in the theft of emails and attachments from senior executives and other individuals in the company's cybersecurity and legal departments.
The Windows maker attributed the attack to a Russian advanced persistent threat (APT) group it tracks as Midnight Blizzard (formerly
A threat actor called Water Curupira has been observed actively distributing the PikaBot loader malware as part of spam campaigns in 2023.
“PikaBot’s operators ran phishing campaigns, targeting victims via its two components — a loader and a core module — which enabled unauthorized remote access and allowed the execution of arbitrary commands through an established connection with
A new exploitation technique called Simple Mail Transfer Protocol (SMTP) smuggling can be weaponized by threat actors to send spoofed emails with fake sender addresses while bypassing security measures.
"Threat actors could abuse vulnerable SMTP servers worldwide to send malicious emails from arbitrary email addresses, allowing targeted phishing attacks," Timo Longin, a senior security
The Computer Emergency Response Team of Ukraine (CERT-UA) has warned of a new phishing campaign orchestrated by the Russia-linked APT28 group to deploy previously undocumented malware such as OCEANMAP, MASEPIE, and STEELHOOK to harvest sensitive information.
The activity, which was detected by the agency between December 15 and 25, 2023, targeted Ukrainian
Barracuda has revealed that Chinese threat actors exploited a new zero-day in its Email Security Gateway (ESG) appliances to deploy backdoors on a "limited number" of devices.
Tracked as CVE-2023-7102, the issue relates to a case of arbitrary code execution that resides within a third-party and open-source library named Spreadsheet::ParseExcel that's used by the Amavis scanner
A new phishing campaign is leveraging decoy Microsoft Word documents as bait to deliver a backdoor written in the Nim programming language.
"Malware written in uncommon programming languages puts the security community at a disadvantage as researchers and reverse engineers' unfamiliarity can hamper their investigation," Netskope researchers Ghanashyam Satpathy and Jan Michael Alcantara 
The Iranian nation-state actor known as MuddyWater has leveraged a newly discovered command-and-control (C2) framework called MuddyC2Go in its attacks on the telecommunications sector in Egypt, Sudan, and Tanzania.
The Symantec Threat Hunter Team, part of Broadcom, is tracking the activity under the name Seedworm, which is also tracked under the monikers Boggy Serpens, Cobalt
Technical details have emerged about two now-patched security flaws in Microsoft Windows that could be chained by threat actors to achieve remote code execution on the Outlook email service sans any user interaction.
"An attacker on the internet can chain the vulnerabilities together to create a full, zero-click remote code execution (RCE) exploit against Outlook clients," Akamai security
Microsoft is warning of an uptick in malicious activity from an emerging threat cluster it's tracking as Storm-0539 for orchestrating gift card fraud and theft via highly sophisticated email and SMS phishing attacks against retail entities during the holiday shopping season.
The goal of the attacks is to propagate booby-trapped links that direct victims to adversary-in-the-middle (AiTM
The threat actors behind the BazaCall call back phishing attacks have been observed leveraging Google Forms to lend the scheme a veneer of credibility.
The method is an "attempt to elevate the perceived authenticity of the initial malicious emails," cybersecurity firm Abnormal Security said in a report published today.
BazaCall (aka BazarCall), which was first
The Russian nation-state threat actor known as APT28 has been observed making use of lures related to the ongoing Israel-Hamas war to facilitate the delivery of a custom backdoor called HeadLace.
IBM X-Force is tracking the adversary under the name ITG05, which is also known as BlueDelta, Fancy Bear, Forest Blizzard (formerly Strontium), FROZENLAKE, Iron Twilight, Sednit, Sofacy, and
The threat actor known as COLDRIVER has continued to engage in credential theft activities against entities that are of strategic interests to Russia while simultaneously improving its detection evasion capabilities.
The Microsoft Threat Intelligence team is tracking under the cluster as Star Blizzard (formerly SEABORGIUM). It's also called Blue Callisto, BlueCharlie (or TAG-53),
Microsoft on Monday said it detected Kremlin-backed nation-state activity exploiting a now-patched critical security flaw in its Outlook email service to gain unauthorized access to victims' accounts within Exchange servers.
The tech giant attributed the intrusions to a threat actor it called Forest Blizzard (formerly Strontium), which is also widely tracked under the
Google has revealed a new multilingual text vectorizer called RETVec (short for Resilient and Efficient Text Vectorizer) to help detect potentially harmful content such as spam and malicious emails in Gmail.
"RETVec is trained to be resilient against character-level manipulations including insertion, deletion, typos, homoglyphs, LEET substitution, and more," according to the&
Delivery- and shipping-themed email messages are being used to deliver a sophisticated malware loader known as WailingCrab.
"The malware itself is split into multiple components, including a loader, injector, downloader and backdoor, and successful requests to C2-controlled servers are often necessary to retrieve the next stage," IBM X-Force researchers Charlotte Hammond, Ole Villadsen, and Kat
A zero-day flaw in the Zimbra Collaboration email software was exploited by four different groups in real-world attacks to pilfer email data, user credentials, and authentication tokens.
"Most of this activity occurred after the initial fix became public on GitHub," Google Threat Analysis Group (TAG) said in a report shared with The Hacker News.
The flaw, tracked as CVE-2023-37580 (CVSS score:
The threat actor known as Winter Vivern has been observed exploiting a zero-day flaw in Roundcube webmail software on October 11, 2023, to harvest email messages from victims' accounts.
"Winter Vivern has stepped up its operations by using a zero-day vulnerability in Roundcube," ESET security researcher Matthieu Faou said in a new report published today. Previously, it was using known
Spanish law enforcement officials have announced the arrest of 34 members of a criminal group that carried out various online scams, netting the gang about €3 million ($3.2 million) in illegal profits.
Authorities conducted searches across 16 locations Madrid, Malaga, Huelva, Alicante, and Murcia, seizing two simulated firearms, a katana sword, a baseball bat, €80,000 in cash, four high-end
The U.S. Federal Bureau of Investigation (FBI) is warning that Barracuda Networks Email Security Gateway (ESG) appliances patched against a recently disclosed critical flaw continue to be at risk of potential compromise from suspected Chinese hacking groups.
It also deemed the fixes as "ineffective" and that it "continues to observe active intrusions and considers all affected Barracuda ESG
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday disclosed details of a "novel persistent backdoor" called SUBMARINE deployed by threat actors in connection with the hack on Barracuda Email Security Gateway (ESG) appliances.
"SUBMARINE comprises multiple artifacts — including a SQL trigger, shell scripts, and a loaded library for a Linux daemon — that together enable
With generative artificial intelligence (AI) becoming all the rage these days, it's perhaps not surprising that the technology has been repurposed by malicious actors to their own advantage, enabling avenues for accelerated cybercrime.
According to findings from SlashNext, a new generative AI cybercrime tool called WormGPT has been advertised on underground forums as a way for adversaries to
Zimbra has warned of a critical zero-day security flaw in its email software that has come under active exploitation in the wild.
"A security vulnerability in Zimbra Collaboration Suite Version 8.8.15 that could potentially impact the confidentiality and integrity of your data has surfaced," the company said in an advisory.
It also said that the issue has been addressed and that it's expected to
"Dozens" of organizations across the world have been targeted as part of a broad business email compromise (BEC) campaign that involved the use of adversary-in-the-middle (AitM) techniques to carry out the attacks.
"Following a successful phishing attempt, the threat actor gained initial access to one of the victim employee's account and executed an 'adversary-in-the-middle' attack to bypass
Banking and financial services organizations are the targets of a new multi-stage adversary-in-the-middle (AitM) phishing and business email compromise (BEC) attack, Microsoft has revealed.
"The attack originated from a compromised trusted vendor and transitioned into a series of AiTM attacks and follow-on BEC activity spanning multiple organizations," the tech giant disclosed in a Thursday
Enterprise security company Barracuda is now urging customers who were impacted by a recently disclosed zero-day flaw in its Email Security Gateway (ESG) appliances to immediately replace them.
"Impacted ESG appliances must be immediately replaced regardless of patch version level," the company said in an update, adding its "remediation recommendation at this time is full replacement of the
Email protection and network security services provider Barracuda is warning users about a zero-day flaw that it said has been exploited to breach the company's Email Security Gateway (ESG) appliances.
The zero-day is being tracked as CVE-2023-2868 and has been described as a remote code injection vulnerability affecting versions 5.1.3.001 through 9.2.0.006.
The California-headquartered firm
The advanced persistent threat (APT) actor known as Winter Vivern is now targeting officials in Europe and the U.S. as part of an ongoing cyber espionage campaign.
"TA473 since at least February 2023 has continuously leveraged an unpatched Zimbra vulnerability in publicly facing webmail portals that allows them to gain access to the email mailboxes of government entities in Europe," Proofpoint
An open source adversary-in-the-middle (AiTM) phishing kit has found a number of takers in the cybercrime world for its ability to orchestrate attacks at scale.
The Microsoft Threat Intelligence team is tracking the threat actor behind the development of the kit under its emerging moniker DEV-1101.
An AiTM phishing attack typically involves a threat actor attempting to steal and intercept a
Popular email marketing and newsletter service Mailchimp has disclosed yet another security breach that enabled threat actors to access an internal support and account admin tool to obtain information about 133 customers.
"The unauthorized actor conducted a social engineering attack on Mailchimp employees and contractors, and obtained access to select Mailchimp accounts using employee
Google on Friday announced that its client-side encryption for Gmail is in beta for Workspace and education customers as part of its efforts to secure emails sent using the web version of the platform.
The development comes at a time when concerns about online privacy and data security are at an all-time high, making it a welcome change for users who value the protection of their personal data.
File hosting service Dropbox on Tuesday disclosed that it was the victim of a phishing campaign that allowed unidentified threat actors to gain unauthorized access to 130 of its source code repositories on GitHub.
"These repositories included our own copies of third-party libraries slightly modified for use by Dropbox, internal prototypes, and some tools and configuration files used by the
A severe remote code execution vulnerability in Zimbra's enterprise collaboration software and email platform is being actively exploited, with no patch currently available to remediate the issue.
The shortcoming, assigned CVE-2022-41352, carries a critical-severity rating of CVSS 9.8, providing a pathway for attackers to upload arbitrary files and carry out malicious actions on affected
A 46-year-old man in the U.S. has been sentenced to 25 years in prison after being found guilty of laundering over $9.5 million accrued by carrying out cyber-enabled financial fraud.
Elvis Eghosa Ogiekpolor of Norcross, Georgia, operated a money laundering network that opened at least 50 business bank accounts for illicitly receiving funds from unsuspecting individuals and businesses after
The Iranian government-backed actor known as Charming Kitten has added a new tool to its malware arsenal that allows it to retrieve user data from Gmail, Yahoo!, and Microsoft Outlook accounts.
Dubbed HYPERSCRAPE by Google Threat Analysis Group (TAG), the actively in-development malicious software is said to have been used against less than two dozen accounts in Iran, with the oldest known
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added a recently disclosed high-severity vulnerability in the Zimbra email suite to its Known Exploited Vulnerabilities Catalog, citing evidence of active exploitation.
The issue in question is CVE-2022-27924 (CVSS score: 7.5), a command injection flaw in the platform that could lead to the execution of arbitrary
Microsoft on Tuesday disclosed that a large-scale phishing campaign targeted over 10,000 organizations since September 2021 by hijacking Office 365's authentication process even on accounts secured with multi-factor authentication (MFA).
"The attackers then used the stolen credentials and session cookies to access affected users' mailboxes and perform follow-on business email compromise (BEC)
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