Digital threats

​For a security engineer it important to understand threat types that can cause digital harm. The threats are:

Malware - malicious software that can impact a computer operation. Malware is available in different types.

Ransomware - this is a malicious type of software that makes certain functionality of computers software not available until the payment is made. Be aware that making a payment does not guarantee that software functionality will be restored.

Denial of service - the Internet resource can be bombarded or flooded with requests that makes that resource not available for legitimate users. DDOS is abbreviation of Distributed Denial of Service, this is DOS attack that is performed by multiple clients.

Spam - email messages that takes a user that clicks on the links in such a message to sites that are harmful to a user. Anti spam filters is a good protection from spam messages. Gmail for example uses spam detection technology for all incoming emails. Most of spam emails end-up in the spam folder, however some spam messages can show up in a user’s inbox. Same is true for valid email messages, such messages can be marked as spam, where there are not.