No. 5: Security Awareness Training
The most sophisticated security system in the world can be bypassed by one person clicking a bad link. Ransomware often gets its foot in the door through phishing emails or other social engineering tactics that trick employees. Consistent, engaging training
is the most cost-effective way to build a human firewall. This isn’t about a boring annual presentation. It’s about teaching staff to spot suspicious emails, verify requests for sensitive information, and understand their role in the company's security. Regular simulated phishing attacks can keep skills sharp and measure improvement, turning your team from a potential vulnerability into your first line of defense.
No. 4: Consistent Patch Management
Cybercriminals love the low-hanging fruit of unpatched software. When a security vulnerability is discovered in common programs like operating systems or browsers, developers release a patch to fix it. Attackers immediately start scanning the internet for systems that haven't been updated, giving them an easy, automated way in. Establishing a regular cadence for updating all software, from servers to laptops, is critical. Many systems can be set to update automatically, reducing the burden on your IT team and closing these doors before attackers can exploit them. Prioritizing critical vulnerabilities, like those listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, ensures you're fixing the most dangerous holes first.
No. 3: Strong Access Controls
The principle of 'least privilege' is a cornerstone of good security. It means that any given user should only have access to the specific data and systems they absolutely need to do their job. This simple policy dramatically limits an attacker's ability to move through your network if they compromise a single account. Strong access control also means enforcing complex, unique passwords and, crucially, avoiding the reuse of credentials across different services. By segmenting your network and restricting administrator-level privileges to only those who require them, you contain the potential damage from a breach and make an attacker's job significantly harder.
No. 2: Multi-Factor Authentication (MFA)
If you do only one thing on this list besides backups, make it this. Multi-factor authentication requires a user to provide two or more verification factors to gain access to an account, such as a password plus a code sent to their phone. This is a game-changer because it means that even if a criminal steals an employee's password, they still can't get in. The FBI and CISA consistently list MFA as one of the most impactful steps any organization can take to prevent unauthorized access. Implementing MFA on all critical systems—especially email, remote access VPNs, and financial applications—provides a massive return on investment for the security it delivers.
No. 1: Tested, Offline, and Immutable Backups
This is your ultimate safety net. While every other item on this list is about preventing an attack, having a robust backup strategy is what guarantees you can recover from one without paying a ransom. A functional backup strategy follows the 3-2-1 rule: three copies of your data, on two different media types, with at least one copy stored offline. 'Offline' or 'immutable' means the backups cannot be altered or deleted by an attacker on the network, a tactic modern ransomware gangs use to disable your recovery options. Simply having backups isn't enough; they must be tested regularly to ensure you can actually restore your data when you need it most. A tested, isolated backup is the only way to be certain your business can get back on its feet after an attack.
