Office 365 TLS Deprecation Report – Preparing for TLS 1.2 Migration

Recently, Microsoft announced a significant update: “We’re retiring 3DES (Triple Data Encryption Standard) in Office 365”. 3DES cipher is mostly used for TLS/SSL to encrypt HTTPS and SSH traffic. Since 2016, it has been marked as vulnerable due to SWEET32 attack (Attackers recovered small portions of plaintext when encrypted with 3DES) and…