1. How can you tell if your computer is safe? 

Making sure your computer is safe involves a few key things security software is a great place to start. Get good antivirus and anti-malware software. These tools scan for threats and stop viruses, malware, and other bad stuff from messing up your system. Another thing is to perform regular updates, keep everything up to date—your operating system, apps, and security tools. Updates often fix bugs that hackers can use to get into your computer, so keeping everything updated is always best practice. Another thing that you should do is perform regular system checks. Keep an eye on how your computer runs. If it’s suddenly slow, crashes a lot, or shows weird pop-ups, it could mean trouble like malware. By doing these things and staying alert, you’ll make your computer a lot safer and lower the risk of getting hacked or infected, and if your computer does become unsafe you will be much more likely to notice quickly. 

2. Describe three ways that computers have made the world safer and less safe. 

Safer: 

1. Healthcare Advances: Computers have transformed healthcare with better diagnosis tools like MRI and CT scans. Electronic health records make it easier for doctors to manage patient info, reducing mistakes and improving treatment. 

2. Communication Advancements: Computers and the internet connect us globally through email, video calls, and social media. This makes it easier to work together, share knowledge, and respond quickly during emergencies. 

3. Transportation Safety: Automated traffic systems and air traffic control powered by computers help manage traffic flow and make travel safer. In aviation, navigation tech and autopilot systems enhance safety by reducing human error. 

Less Safe: 

1. Cybersecurity Risks: With everything connected online, we face risks like malware, ransomware, and scams. Hackers exploit weak spots in software to steal info or disrupt services, causing chaos and financial loss. 

2. Privacy Risks: Computers gather tons of personal data from our online activities. Privacy breaches, surveillance, and data leaks can lead to identity theft and invasion of privacy, eroding trust in digital systems. 

3. Tech Dependency: Our reliance on computers means disruptions—like cyber attacks or glitches—can have big consequences. Critical services like energy and finance are vulnerable, affecting everyone’s safety and well-being, and likely if we lost access to all computer systems the world would quickly crumble, a clear sign of how deep our dependence on technology runs.