What is Server Message Block (SMB) used for in Windows and can a hacker still damage a network using SMB?

The absolute most decimating ransomware and Trojan malware variations rely upon vulnerabilities in the Windows Server Message Block (SMB) to proliferate through an association's system. Windows SMB is a convention utilized by PCs for record and printer sharing, just as for access to remote administrations.  

A fix was discharged by Microsoft for SMB vulnerabilities in March 2017, yet numerous associations and home clients have still not applied it. So now, the unpatched frameworks permit dangers that exploit these vulnerabilities inside, helping dynamic malware crusades spread like Californian rapidly spreading fire.  

SMB vulnerabilities have been so effective for danger entertainers that they've been utilized in the absolute most unmistakable ransomware episodes and refined Trojan assaults of the most recent two years. Truth be told, our item telemetry has recorded 5,315 discoveries of Emotet and 6,222 of TrickBot in business systems—two Trojan variations that are utilizing the SMB vulnerabilities—over the most recent 30 days alone.

Explanation:

This is a network protocol primarily designed for window-based system to share files with other computers on the same network. although with samba, other Operating system such ios can use SMB.

Yes, an Hacker can still damage a network using SMB by attacking the main server.