Most Cyber Attacks Focus on Just Three TCP Ports


Small to mid-sized businesses can keep safe from most cyber attacks by protecting the ports that threat actors target the most. Three of them stand out in a crowd of more than 130,000 targeted in cyber incidents.

A report from threat intelligence and defense company Alert Logic enumerates the top weaknesses observed in attacks against over 4,000 of its customers.

Top TCP ports attacked

According to the report, the ports most frequently used to carry out an attack are 22, 80, and 443, which correspond to SSH (Secure Shell), the HTTP (Hypertext Transfer Protocol), and the HTTPS (Hypertext Transfer Protocol Secure).

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