Internet-Security.com TCP port 5555 details

Android Debug Bridge (ADB) uses TCP 5555 for network debugging; it’s used on Android phones/tablets, Android TV and Amazon Fire TV devices, and by emulators such as the Android Studio Emulator, Genymotion, and BlueStacks.
When exposed to the internet, ADB on 5555 has been widely abused by attackers (e.g., ADB.Miner cryptominer worm and Satori/Mirai variants) to gain shell access and deploy malware.
HPE Data Protector (formerly HP Data Protector) uses TCP 5555 for its “Inet” client service that receives backup/restore commands from the backup server on Windows and Unix systems.
The Data Protector Inet service on 5555 has had multiple remote code execution vulnerabilities in older versions and is a known target when left accessible.

TCP 5555