Top 7 Email Security Threats Facing Businesses in 2026
Barracuda Networks, Monday, October 26th, 2026
Barracuda lists the top seven email security threats businesses face in 2026 and recommends layered defenses.
The Barracuda Networks blog identifies email as a primary attack vector and lists seven threats for 2026: phishing and spear phishing, business email compromise, account takeover, data loss and insider threats, spam and malware flooding that causes alert fatigue, misconfigured security policies such as missing authentication records, and a lack of user awareness and training.
It recommends layered defenses including SPF, DKIM, and DMARC, multifactor authentication, awareness training, backups, and automated incident response.
The article also promotes Barracuda Email Protection as a product combining these controls.