For example, legacy FTP traffic that is transmitted over TCP port 21 is not a secure protocol. Files, credentials, and other information traversing FTP are transmitted in cleartext with no encryption. We often hear about the encryption used by the bad guys concerning ransomware. However, encryption, when used to secure your data, works in favor of security. Using legacy and insecure ports and protocols can be a step in the wrong direction for businesses looking to secure their environment and increase their cybersecurity posture. While TCP port 21 FTP is a solid and well-established protocol that has served well for years and still underpins millions of file transfer sites, it lacks in the all-important area of security. Businesses today cannot afford to have lax cybersecurity standards. There is no shortage of attack vectors from ransomware, malware, network snooping, phishing, brute force, and other attacks.
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