• Implement a firewall – A firewall protects your network from unauthorized access. By blocking incoming connections, it reduces the likelihood that an attacker will be able to launch a successful DDoS attack against your network.
• Consider implementing a content filtering solution – Content filtering solutions block inappropriate websites and images from reaching your network. They also help protect against viruses and malware by scanning for malicious software before it enters your network.
• Install anti-malware software – Anti-malware programs scan your systems for known threats and remove any infections they find. This helps ensure that your systems remain free of malware.
• Update your operating system – Operating systems such as Windows XP and Mac OS X include patches designed to fix vulnerabilities in their underlying code. Updating these patches ensures that your systems remain secure.
• Avoid Opening attachments – Don’t open email messages containing attachments. Instead, download the attachment to your desktop and open it using a file manager. If necessary, delete the message.
• Be careful what you click – Don’t click links in unsolicited emails. Instead, visit the website directly using your browser.
• Back up your data – Backing up your data is important in case your computer crashes or gets damaged. It also allows you to recover lost data if you lose your password or accidentally delete files.

More info: Common IT Challenges That Managed IT Services Can Help Solve