Your employees are not trying to create security problems. But their devices often do anyway.
Smartphones, laptops, and tablets connect to your business systems constantly — from home networks, coffee shops, hotel Wi-Fi, and everywhere in between. Each of those connections is an opportunity for something to go wrong. And in Ottawa, where many businesses work with government partners, handle regulated data, or operate in industries like legal, finance, and healthcare, the consequences of a breach go well beyond an inconvenient IT problem.
Here are eight of the most common ways employee devices introduce risk — and what practical steps actually help.
1. Unsecured Wi-Fi Connections
When an employee connects to public Wi-Fi at an airport, café, or hotel, their device is sharing a network with strangers. Without proper protection, traffic on that connection can be intercepted — including login credentials, email content, and access tokens for business applications.
This isn’t theoretical. It’s one of the most common ways credentials get stolen outside the office.
The practical fix is straightforward: require a VPN for any connection to business systems outside the office network. A properly configured VPN encrypts traffic so that even on an unsecured network, what’s being sent and received isn’t readable to anyone else on the same connection.
Pro Tip: “Always-on” VPN configurations that activate automatically whenever a device is off the corporate network remove the reliance on employees remembering to turn it on manually.
2. Personal Apps Installed on Work Devices
When employees install personal apps on devices that also access business systems, those apps can become an entry point. Many personal apps request broad permissions — access to files, contacts, location, camera — that a business application would never need.
Some of these apps are poorly secured. Others come from sources that don’t vet their software carefully. Either way, an app that behaves badly on a device that has access to your business email, SharePoint, or internal systems is a problem.
This is one of the strongest arguments for mobile device management (MDM) policies that define which apps are permitted on devices used for work — whether those are company-owned devices or personal devices under a BYOD policy.
Did You Know: Supply chain attacks — where malicious code is embedded in legitimate software before distribution — have compromised applications downloaded from official app stores, not just third-party sources. Vetting apps before they reach your fleet matters.
3. Cloud Sync to Personal Accounts
Most employees don’t think twice about saving a document to their personal Dropbox or attaching a file from a personal Google Drive. From their perspective, it’s just a faster way to get something done.
From a security and compliance perspective, it means business data has left your controlled environment and is now sitting in a personal account with different security settings, different access controls, and potentially different geographic data storage.
For Ottawa businesses subject to PIPEDA or operating under government contracts with data residency requirements, this is a compliance issue as much as a security one.
Enforcing Microsoft 365 policies that restrict file sharing to company-managed accounts — and educating employees on why this matters — addresses most of this risk without creating significant friction.
Pro Tip: Most data leakage through cloud sync isn’t malicious. It’s convenience-driven. Policies that make the secure option the easy option work better than policies that require extra steps.
4. Lost or Stolen Devices
A laptop left in a taxi. A phone forgotten at a restaurant. A bag taken from a car. Physical device loss is common, and when it happens, every account that device was logged into becomes a potential risk.
The question isn’t whether you can prevent a device from ever being lost. It’s whether a lost device immediately becomes a security incident or just an inconvenience.
Remote wipe capabilities, enforced full-disk encryption, and strong screen lock requirements mean that a stolen device is essentially useless to whoever has it. Without those measures, it’s a set of open doors.
Mobile device management solutions give IT teams the ability to remotely lock or wipe devices, verify encryption status, and enforce screen lock policies across the entire fleet from a single console.
Key Takeaway: Full-disk encryption and remote wipe capability are the two controls that convert a lost device from a potential breach into a recoverable situation. If you don’t have both in place for every device accessing business systems, that’s worth fixing now.
5. Weak or Reused Passwords
Password reuse is one of the most persistent security problems in business environments. An employee uses the same password for a personal streaming service and their work email. That streaming service experiences a breach. Their work email is now exposed — not because of anything your business did, but because of how passwords work.
Multi-factor authentication (MFA) is the most effective control against this. Even if a password is compromised, MFA means an attacker still can’t log in without the second factor. For Ottawa businesses using Microsoft 365, MFA can be enforced across all accounts through Entra ID conditional access policies.
Password managers solve the reuse problem by making it practical for employees to use unique, complex passwords for every account without having to remember them.
Did You Know: According to Microsoft, MFA blocks more than 99% of automated credential-based attacks. It’s one of the highest-return security measures available and typically takes less than a day to configure.
6. Unpatched Software and Operating Systems
Software updates aren’t just new features. They’re frequently security fixes for vulnerabilities that have been publicly disclosed — meaning attackers know about them and are actively looking for systems that haven’t patched them yet.
An employee running an outdated version of Windows, an unpatched browser, or an old version of a common business application is running software with known, documented security holes.
Patch management doesn’t have to be manual. Automated update policies and centrally managed software deployment tools ensure that updates are applied consistently across all devices, without depending on individual employees to remember.
Pro Tip: End-of-life software — operating systems or applications that no longer receive security updates — should be treated as an urgent priority. There are no patches coming for known vulnerabilities in software the vendor no longer supports.
7. Phishing Attacks Targeting Employees
Phishing remains one of the most effective attack methods because it targets people, not technology. A convincing email, a fake login page, a text message appearing to be from IT — these work because they’re designed to look legitimate.
Mobile devices make phishing harder to spot. Smaller screens truncate URLs. Notifications appear without full context. Employees checking email quickly between meetings are less likely to scrutinize a link carefully.
Two things consistently reduce phishing success rates: employee training that includes realistic simulated phishing exercises, and technical controls like email filtering that catch and flag suspicious messages before they reach the inbox.
Neither alone is sufficient. Training without filtering still lets sophisticated attacks through. Filtering without training means employees don’t recognize the ones that do get through.
Key Takeaway: Firewall Technical’s IT security services include security awareness training and email protection that work together to reduce phishing risk at both the technical and human layer.
8. Compromised Devices Acting as Internal Threats
When a device is compromised — through malware, a phishing attack, or an unsecured connection — an attacker can use that device to move through your network from the inside. Because the device is authenticated and trusted, this kind of lateral movement is harder to detect than an external attack.
This is why the principle of least privilege matters. Users and devices should only have access to what they actually need for their role. If a compromised device only has access to what one employee needs day-to-day, the blast radius of a compromise is contained. If that device has broad access to file shares, internal systems, and administrative consoles, the potential damage is much greater.
Zero Trust security models — which verify every access request regardless of where it comes from — are designed specifically for this scenario. Rather than trusting devices because they’re on the network, every access attempt is evaluated against current context.
Did You Know: Zero Trust isn’t a single product. It’s a security approach that can be implemented progressively. Microsoft 365 Business Premium includes several Zero Trust capabilities that Ottawa businesses can enable without a major infrastructure overhaul.
Where to Start
These eight risks don’t require eight separate projects to address. Many of the most effective controls — MFA, patch management, MDM, email filtering — overlap and reinforce each other. A security assessment gives you a clear picture of where your current gaps are so you can prioritize what actually needs attention.
Firewall Technical works with Ottawa businesses across a range of industries to assess device security, implement practical controls, and build environments that stay secure as the workforce and threat landscape evolve.
If you’d like to understand where your business stands, start with an IT security assessment or reach out to our 24/7 helpdesk for immediate support.
Call 613-288-5805 or email support@firewalltechnical.com.
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