Cold outreach has always been a tightrope walk. On the other hand, businesses and recruiters are seeking to connect with new prospects and initiate conversations. On the other, sending too many emails to the wrong people at the wrong time can harm the sender’s reputation, kill deliverability, and even have a domain blacklisted.
Setting up DomainKeys Identified Mail (DKIM) is an essential step in robust email authentication for any custom domain. By integrating an email DKIM check into your domain environment, you significantly enhance email security, improve email deliverability, and reduce the risk of email spoofing and phishing attacks.
Email-based cyberattacks are everywhere. They are more rampant in some industries and have grave consequences in others. For sectors that operate on very high stakes, like aviation and energy, the impact of these attacks is usually very serious and sometimes, at a scale that can disrupt other critical services as well.
In today’s digital landscape, ensuring robust email security is paramount for organizations and domain owners alike. The rise of email phishing attacks, domain spoofing, and other forms of email fraud necessitates advanced solutions that not only detect but also prevent unauthorized email activity.
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It was a busy week for cybersecurity threats. Hackers exploited a flaw in VMware software, giving them full control over virtual machines. At the same time, Microsoft flagged a phishing campaign that used AI written code in fake file sharing emails to trick victims. A new Android Trojan, Datzbro, also spread through fake senior community apps, letting criminals take over phones. To top it off, the Confucius group launched fresh phishing attacks, and researchers found a malicious Python package that secretly installed backdoors on Windows systems.
The Simple Mail Transfer Protocol (SMTP) stands as the cornerstone of email delivery across the internet. As an email protocol, SMTP is responsible for the sending and relaying of messages between email servers in the TCP/IP suite. Designed originally in the 1980s, SMTP governs the outgoing mail server infrastructure and serves as the standard method used by mail transfer agents (MTAs) such as Postfix, Sendmail, Exim, and Microsoft Exchange Server to forward email from a mail user agent (MUA) or an email client to the destination email server.
Invoice fraud doesn’t start with a Hollywood-grade hack. It starts with a believable message, a familiar vendor name, and a PDF that looks routine. Attackers know accounts payable runs on documents, so they hide social engineering and malware inside “invoice” attachments to reroute payments or plant a foothold. This guide lays out a practical, technical path to process PDF invoices safely—without turning your finance team into part-time security analysts.
DomainKeys Identified Mail (DKIM) is a critical component of modern email authentication frameworks designed to enhance email security by verifying sender identities and ensuring message integrity. Introduced as an open standard and formalized by RFC 6376, DKIM employs public key cryptography to cryptographically sign email headers and message body, allowing mailbox providers like Google’s Gmail, Microsoft 365, and Yahoo to verify that emails originate from legitimate senders.
An online SMTP server functions as a critical component of the email protocol infrastructure, facilitating the transfer of outgoing emails over the internet. SMTP, or Simple Mail Transfer Protocol, is the standardized protocol that governs how email servers, or mail transfer agents (MTAs), communicate to ensure reliable email delivery. Acting as an outgoing mail server, an SMTP server handles the sending process, routing emails through SMTP relay channels to the recipient’s email server.