ngs of data to enterprises. This makes the network unavailable to legitimate incoming and outgoing traffic. Security Software Security software can be embedded in virtualized servers and containers with other applications or in a standalone appliance (a computer with a dedicated application). There is a trend to embed security in multifunctional devices. Routers are often equipped with firewalls, and Local Area Network (LAN) switches also contain optional security software. There is also specialty security for e-mail and other applications. Security software can be used to encrypt files containing passwords to protect the files from snoopers and employees not authorized to view sensitive files with personal information or intellectual property. This is important because many employees, contractors, and business partners now access files remotely and are allowed access only to particular applications and files. www.TechnicalPDF.com In addition to all of these practices, firms hire outside organizations to conduct a security audit to identify weaknesses that leave the organization vulnerable to attacks. Auditors might identify out-of-date software that needs to be patched, or they might find unauthorized wireless devices. Most security software and hardware products and services offer software that generates audit trails. Software records display indications of security breaches. Paying attention to them is an aid to identifying network weaknesses. In IT departments with large workloads, this does not always happen. Encryption is the use of mathematical algorithms to make files unreadable except to users who have the software, the key, necessary to decrypt the files. Encryption is also used on files transmitted between corporate sites and between remote staff and their offices. Block Chain Block Chain is new a security protocol now being tested to manage data, track assets, and process financial transactions between banks. It is a distributed protocol without a central entity managing the interactions between nodes