1. Symantec: Internet Security Threat Report (ISTR) 2019|Symantec, April 2019. https://www.symantec.com/securitycenter/threat-report. Accessed Jan 2021
2. Rozenblum, D.: Understanding Intrusion Detection Systems, SANS Institute Reading Room site1
3. Rajasekhar, K., Babu, B.S., Prasanna, P.L., Lavanya, D.R., Krishna, T.V.: An overview of intrusion detection system strategies and issues. Int. J. Comput. Sci. Technol. 2(4) (2011)
4. Sonawane, S., Pardeshi, S., Prasad, G.: A survey on intrusion detection techniques. World J. Sci. Technol. 2(3), 127–133 (2012)
5. Kumar, V., Sangwan, P.O.: Signature based intrusion detection system using SNORT. Int. J. Comput. Appl. Inf. Technol. 1(3) (2012) (ISSN: 2278–7720)