Over the past few days, we have seen phishing attacks that use a combination of compromised Microsoft 365 accounts and .rpmsg encrypted emails to deliver the phishing message.
One of the most expensive aspects of any cybercriminal operation is the time and effort it takes to create large numbers of new throwaway email accounts. Now a new service offers to help dramatically cut costs associated with large-scale spam…
Barracuda Networks's Status Page - Barracuda identified a vulnerability (CVE-2023-2868) in our Email Security Gateway appliance (ESG) on May 19, 2023..
A new ransomware operation is hacking Zimbra servers to steal emails and encrypt files. However, instead of demanding a ransom payment, the threat actors claim to require a donation to charity to provide an encryptor and prevent data leaking.
As we continue to enhance the security of our cloud, we are going to address the problem of email sent to Exchange Online from unsupported and unpatched Exchange servers. There are many risks associated with running unsupported or unpatched software, but by far the biggest risk is security. Once a version of Exchange Server is no longer supported, it no longer receives security updates; thus, any vulnerabilities discovered after support has ended don’t get fixed. There are similar risks associated with running software that is not patched for known vulnerabilities. Once a security update is released, malicious actors will reverse-engineer the update to get a better understanding of how to exploit the vulnerability on unpatched servers.
Last October, Trustwave SpiderLabs blogged about the use and prevalence of HTML email attachments to deliver malware and phishing for credentials.
CISA has urged organizations to patch a recent Zimbra credential theft vulnerability after reports of exploitation in the wild.
A ThreatLabz technical analysis of the latest variant of proxy-based AiTM attacks that are phishing enterprise users for their Microsoft credentials.
We discovered flaws in Zimbra, an enterprise email solution, that allow attackers to steal credentials of users and gain access to their email accounts.
Earlier this year Malwarebytes released its 2022 Threat Review, a review of the most important threats and cybersecurity trends of 2021, and what they could mean for 2022. Among other things it covers the year’s alarming rebound in malware detections, and a significant shift in the balance of email threats.
Tracking, marketing, and analytics firms have been exfiltrating the email addresses of internet users from web forms prior to submission and without user consent, according to security researchers.
We introduce UNC3524, a newly discovered suspected espionage threat actor targeting corporate emails.
Earlier today, I received a scam email that impersonates the Ukrainian Red Cross. It attempts to solicit donations via Bitcoin. The email is almost certainly not related to any valid Red Cross effort.
There are some legitimate efforts to collect donations for Ukraine using crypto-currencies. This scam may take advantage of these efforts.
