I run into this situation all the time when pen-testing.
Me: “I found this system that is running Windows XP, you need to decommission this one.”
Client: “We can’t, that system is running a custom Access application that was written by a former employee. He left the company 10 years ago and nobody knows to to update his code.”
Later we discover the system has been hijacked for years and is hosting stolen identity documents, and spamming the customers of a French ISP.
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About the Author:
I am a cybersecurity and IT instructor, cybersecurity analyst, pen-tester, trainer, and speaker. I am an owner of the WyzCo Group Inc. In addition to consulting on security products and services, I also conduct security audits, compliance audits, vulnerability assessments and penetration tests. I also teach Cybersecurity Awareness Training classes. I work as an information technology and cybersecurity instructor for several training and certification organizations. I have worked in corporate, military, government, and workforce development training environments I am a frequent speaker at professional conferences such as the Minnesota Bloggers Conference, Secure360 Security Conference in 2016, 2017, 2018, 2019, the (ISC)2 World Congress 2016, and the ISSA International Conference 2017, and many local community organizations, including Chambers of Commerce, SCORE, and several school districts. I have been blogging on cybersecurity since 2006 at http://wyzguyscybersecurity.com