Excellent job, Rose!

Many computers are attacked by hackers. Private users frequently check out whether viruses have invaded their computers or not.
Most companies and public officies set up security systems to protect their information, nevertheless, defenses can be broken.
A few years ago, one of the biggest banks in Korea was attacksd from hackers, and many people were surprised by the news.
People thought that the banks had the best security systems.
My office’s computers are controlled by a main computer, and a day of security checks is designated, and only approved media(usb) can be used.