1. Cybersecurity and I. S. Agency, "2022 Year in Review," June, 2022, https://www.cisa.gov.
2. Cybersecurity and I. S. Agency, "2022 Year in Review," June, 2022, https://www.verizon.com/business/resources/reports/dbir/.
3. Cybersecurity and I. S. Agency, "CISA Vulnerability Scanning," 2022, https://www.cisa.gov/resources-tools/services/cisa-vulnerability-scanning.
4. J. L. Hardcastle "Uncle Sam orders federal agencies to step up scans for govt IT security holes " 2022 https://www.theregister.com/2022/10/04/cisa_software_vulnerability_directive/.
5. N. C. S. Centre "Scanning the internet for fun and profit " 2022 https://www.ncsc.gov.uk/blog-post/scanning-the-internet-for-fun-and-profit.