Is your business unknowingly inviting a data breach? Discover 8 critical security mistakes that put company data at risk and what you can do right now to fix them.
There is a specific type of overconfidence that can lead businesses into trouble the belief that “we are too small to be a target” or “our IT team has everything under control.” According to IBM’s annual analysis of the cost of data breaches, the global average cost of a single breach has surpassed $4 million, and many of the victims are completely unprepared organizations. The Canadian Centre for Cyber Security publishes Canadian-specific threat data and guidance for businesses of every size.
What makes this especially frustrating is that many of the most damaging breaches trace back to decisions that felt harmless at the time: a shared password, a skipped update, an email attachment clicked too quickly.
Here are eight security mistakes businesses repeatedly make and how to start correcting course.
1. Using Weak or Recycled Passwords Across Systems
Password hygiene is simultaneously the most talked-about and most ignored aspect of business security. Teams share credentials over Slack, employees reuse their personal passwords for work accounts, and passwords set up during onboarding two years ago are never changed.
The real problem arises when a single credential is compromised attackers then attempt to use that same combination across multiple other platforms. This method, known as credential stuffing, requires no special skills.
What to do: Deploy a business password manager and make it non-negotiable for all staff. Set minimum complexity requirements and enforce unique credentials for every service.
2. Skipping Multi-Factor Authentication
A password alone is a single point of failure. MFA adds an extra verification step, ensuring that a stolen password does not automatically compromise your account.
Despite being widely available and often free, MFA adoption among small and mid-sized businesses remains surprisingly low. An MFA prompt takes only about 5 seconds recovering from a compromised account can take days or weeks.
What to do: Enable MFA on every external-facing system that supports it: email, cloud storage, project management tools, CRM, banking. Prioritize authenticator apps over SMS codes.
3. Treating Software Updates as Optional
When a software vendor releases a security patch, it provides attackers with a roadmap the patch notes outline which vulnerabilities were addressed, meaning anyone who has not applied the update is now using software with a documented, publicly known flaw.
The 2017 WannaCry ransomware attack affected over 200,000 systems across 150 countries exploiting a vulnerability that had been patched two months earlier. Organizations that had applied the update were unaffected.
What to do: Establish a patch management policy with defined timelines. Critical security patches should be applied within 24–72 hours.
4. Giving Employees More Access Than They Need
Every person and system should have only the permissions necessary to do their specific job nothing more. This limits the blast radius if an account is compromised.
What to do: Conduct a permissions audit at least once a year. Use role-based access controls. Build an off-boarding checklist that includes revoking access on the employee’s last day.
5. Underestimating Phishing Attacks
Modern phishing attempts are precise, researched, and often indistinguishable from legitimate communications. Attackers study LinkedIn profiles, scrape company websites, and craft messages that reference real colleagues and real projects.
What to do: Run regular phishing simulations. Train employees to verify unexpected requests through a separate channel call the person, do not reply to the email.
6. Neglecting Endpoint Security on Remote Devices
An employee’s laptop connecting to company systems over a public café network is a risk. A personal phone being used to access business email without any management policies is a risk.
What to do: Implement mobile device management (MDM) for any device accessing business data. Enforce encrypted connections through a VPN for remote access.
7. Not Having a Tested Backup and Recovery Plan
Many businesses do have backups, technically. What they do not have is a backup strategy they have ever actually tested.
A backup that has not been restored is a belief, not a plan.
What to do: Follow the 3-2-1 rule three copies of your data, on two different storage types, with one stored offsite or in the cloud. Test restoration quarterly.
8. Skipping a Formal Security Policy
Security does not stick without structure. When there is no written policy, security becomes a matter of individual judgment and individuals make different calls.
What to do: Draft a security policy appropriate for your company’s size and industry. Have employees acknowledge it annually. Update it when your tools, workflows, or risk landscape change.
Final Thoughts
None of these eight mistakes requires advanced technical knowledge to occur. That is partly what makes them so common they often slip through the cracks because they do not seem like security issues.
Start by addressing the most obvious issue on this list within your organization. Addressing a single vulnerability effectively is far more valuable than poorly implementing a broad security program that covers everything. Our managed services team handles patch management, MFA deployment, and security policy for businesses across BC.
