Internet attacks are not uncommon in today's world, as many businesses are built online. User data is stored in a cache and is visible to third parties. Therefore, if you have a site or page on the web, you need to take security measures to avoid having your contacts stolen. Attackers use several methods, such as two-factor encryption, connection of proxy servers, VPN services. And the use of paid search programs allows you to quickly find out who is hiding behind the unknown person who is bothering you.

Electronic Health Records (EHRs) have become an integral part of modern healthcare, transforming how personal health information is stored, shared, and accessed. HIPAA, the Health Insurance Portability and Accountability Act, mandates the careful management of patient data. As we increasingly rely on digital platforms, EHR technology plays a fundamental role in ensuring HIPAA compliance.

It is hardly possible to overestimate the importance of power supplies in modern engineering and electronics. Such equipment allows the transformation and transmission of electrical power within an appropriate format depending on its.application to a particular device. However, such concepts of electricity as alternating current (AC) or direct current (DC) power supply are important for both active people and professionals alike in the area. The present paper sets out to do just that: describe the operational principles, advantages, and typical applications of two of the most important power supply units - AC and DC.