Spam can deliver phishing links, malware, and fraudulent messages, making it a path for account theft and other cyberattacks.
Search across headline titles and summaries.
Background for this topic.
Spam is unsolicited, usually bulk messaging sent through email, text messages, social platforms, or other communication services. It may be commercial advertising, but security-relevant spam commonly includes deceptive messages designed to look like trusted communications. Automated campaigns can target large numbers of recipients at low cost, while compromised accounts and spoofed sender identities can make messages appear more credible.
Spam is a delivery channel for phishing, malware, fraudulent payment requests, and credential theft; links or attachments should therefore be treated as untrusted until verified. Defenses include reputation and content filtering, user reporting, attachment and URL analysis, and email authentication controls such as SPF, DKIM, and DMARC to reduce sender spoofing. Security teams should preserve relevant message headers and indicators when investigating campaigns, blocking associated infrastructure and checking whether recipients interacted with the content.
The BlackBasta ransomware operation has moved its social engineering attacks to Microsoft Teams, posing as corporate help desks contacting employees to assist them with an ongoing spam attack. [...]
The BlackBasta ransomware operation has moved its social engineering attacks to Microsoft Teams, posing as corporate help desks contacting employees to assist them with an ongoing spam attack. [...]
The trend toward remote working over the last several years has bred all kinds of tools intended to help us improve productivity and facilitate easier, faster digital communications with colleagues. So why does workplace productivity still feel impossible to achieve? Unfortunately, email—one of the most integral vehicles for business communication—is also one of the biggest drains on employee time and energy. According to data from Microsoft, employees spend as much as 8.8 hours each week checking and responding to email. And while many email communications are essential, one recent report found that nearly half of all emails are spam or other unwanted mail.