Online security refers to the measures taken to protect computers, networks, and data from unauthorized access or attacks. This includes using strong passwords, enabling two-factor authentication, and keeping software updated. By following these practices, individuals and organizations can reduce the risk of cyber threats such as hacking and identity theft. Another important aspect of online security is being aware of phishing scams, where attackers trick users into revealing personal information. Users should be cautious about clicking on suspicious links or sharing sensitive data. Tools like antivirus software and firewalls can also help safeguard against potential threats in the digital environment.