Advances and Attacks Why is cytersecurity necessary in today's world? Select all that apply. Computer systems used by governments are designed to be accessible to all users everywhere Government computer systems can be electronically taken over and controlled by terrorists. A computer system with no program to guard data puts the user at risk for receiving spam. A volterable computer system can be accessed by a remote user who can steal sensitive data.

Cybersecurity is necessary in today's world for several reasons. Let's analyze each of the given options:<br /><br />1. **Computer systems used by governments are designed to be accessible to all users everywhere**: This statement is incorrect. Government computer systems are typically designed with strict access controls to ensure that only authorized users can access them. They are not designed to be accessible to all users everywhere.<br /><br />2. **Government computer systems can be electronically taken over and controlled by terrorists**: This is a valid reason. Cybersecurity is necessary to protect government systems from such attacks, which could have severe consequences for national security.<br /><br />3. **A computer system with no program to guard data puts the user at risk for receiving spam**: While this is true, it is a more minor concern compared to the potential for serious breaches of security and privacy. Spam is generally considered a nuisance rather than a critical security threat.<br /><br />4. **A vulnerable computer system can be accessed by a remote user who can steal sensitive data**: This is another valid reason. Cybersecurity is essential to prevent unauthorized access and the theft of sensitive data, which can have significant consequences for individuals, businesses, and governments.<br /><br />Therefore, the correct answers are:<br />- Government computer systems can be electronically taken over and controlled by terrorists.<br />- A vulnerable computer system can be accessed by a remote user who can steal sensitive data.