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Cyber-security is the practice of protecting internet-connected devices and services from phishing schemes, hacks, identity theft, and data breaches. It can include measures like firewalls, encryption, and two-factor authentication. It can also involve education, as well as the creation and maintenance of security policies.

As technology advances and our society becomes increasingly digital, cybersecurity is becoming more important than ever before. People with a background in computer science can help safeguard personal information, business networks, and the integrity of our physical infrastructure and public services from cyberattacks.

In the world of cybersecurity, threats can come from a variety of sources, including criminal organizations, professional hackers, and amateur hackers (hacktivists). Attacks can range from Distributed Denial of Service attacks, which flood systems with messages, connections requests, or packets to overwhelm and crash them, to advanced persistent threats in which attackers gain long-term access to systems to steal information or disrupt operations.

Other dangers that cybersecurity professionals deal with include eavesdropping, where hackers intercept messages between parties that appear to be communicating directly and often target children or other vulnerable people. Another risk is malware, which is designed to disrupt and infect computers and other connected devices. This can include viruses, worms, Trojan horses, rootkits, spyware, and man-in-the-middle attacks, among others.

As a cybersecurity specialist, you may be responsible for developing strategies to prevent these attacks before they occur. This can involve educating employees and implementing preventative measures such as installing anti-virus software, keeping software up to date, using two-factor authentication, and backing up data regularly. You can also develop industry-specific solutions to protect entities and organizations from specific types of cyberattacks.