There are many simple ways to make sure that your computer is safe. To start if you notice your computer slowing down or acting irregular that could be a sign that it has been tampered with. Another effective way is to run a virus scan on your computer to check for any malware. Sustaining this safety should also be a huge priority so having an antivirus software is very helpful to keeping your computer safe and secure. Logging all your passwords information in a safe place and changing your passwords regularly are some healthy habits to get into to keep your private data private. Computers have had a huge impact on safety for everyone. Something as simple as security cameras have played a major role in deterring crime but it doesn’t stop there; satellites have provided constant surveillance and easy communication incase of emergencies. Computers have also had a massive role in developing new medicines and treatments that have helped saved countless lives. Technology has allowed us to operate more efficiently during various surgeries and operations. Through the development of faster computers they allow public service workers to respond faster to 911 calls letting people in need get the help they need. On the other hand computers can be used as tools to help criminals steal identities and private information. Computers have also aided the development of weapons of mass destruction like the nuclear bomb. There is no limit to who can use computers which means that its up to users what they want to do with them. With certain knowledge someone can cause a substantial amount of damage to businesses and people. With the existence of zero days, which are ways of hacking that have no protection against them, with the wrong intentions many people could be at risk.