Phishing is the most common way cybercriminals gain access to business systems, and it's not the obvious spam you might picture. Modern phishing attacks are targeted, sophisticated, and designed to fool even cautious employees. According to the Canadian Centre for Cyber Security, phishing remains the number one initial attack vector for data breaches affecting Canadian organizations.

For Ontario businesses, the stakes are real. A single successful phishing email can lead to stolen credentials, ransomware deployment, wire fraud, or a full data breach with regulatory consequences under PIPEDA. This guide covers what phishing looks like in 2026, how to train your team to recognize it, and what to do if someone clicks the wrong link.

What Is Phishing?

Phishing is a type of social engineering attack where an attacker impersonates a trusted entity (a bank, a vendor, a colleague, or a service provider) to trick someone into revealing sensitive information, clicking a malicious link, or downloading an infected attachment.

Phishing comes in several forms, each with its own level of sophistication:

Email phishing: The most common type. Mass emails disguised as legitimate communications from banks, shipping companies, or software providers.
Spear phishing: Targeted attacks aimed at specific individuals. The attacker researches their target and crafts a personalized message that references real projects, colleagues, or events.
Business email compromise (BEC): The attacker impersonates a CEO, CFO, or other executive to trick an employee into transferring funds or sharing sensitive data. BEC attacks cost businesses billions annually.
Vishing: Voice phishing conducted over the phone. The caller impersonates IT support, a bank, or a government agency to extract information or gain remote access.
Smishing: Phishing via SMS text messages, often with links to credential-harvesting websites disguised as delivery notifications or account alerts.

How to Recognize a Phishing Attack

Training your team to spot phishing is one of the most effective defences your business can invest in. Here are the warning signs every employee should know.

Suspicious Sender Addresses

Always check the actual email address, not just the display name. Phishing emails often use addresses that look close to legitimate ones, such as "support@micros0ft.com" instead of "support@microsoft.com" or "accounts@yourbank-secure.com" instead of the real domain. On mobile devices, display names can mask the real address entirely, so train employees to check carefully.

Urgency and Fear Tactics

Phishing emails almost always create a sense of urgency: "Your account will be locked in 24 hours," "Immediate action required," or "Payment overdue. Respond now." Legitimate companies rarely demand immediate action via email. If a message makes you feel panicked, that's a signal to slow down and verify.

Unexpected Attachments and Links

Never open an attachment you weren't expecting, even if it appears to come from someone you know. Hover over linksbefore clicking to see the actual URL. If the link text says "Microsoft Login" but the URL points to a different domain, it's phishing. On mobile, press and hold a link to preview the URL before tapping.

Grammar and Branding Errors

While sophisticated phishing emails have improved dramatically, many still contain subtle errors: misspelled company names, incorrect logos, unusual formatting, or language that doesn't match the tone of legitimate communications from that organization.

Requests for Credentials or Sensitive Information

No legitimate company will ask you to confirm your password, send your login credentials, or share sensitive financial information via email. If an email asks for this, it's phishing, regardless of how official it looks.

What Happens When Someone Falls for It

Understanding the consequences helps reinforce why phishing awareness matters. When an employee clicks a phishing link or opens a malicious attachment, the consequences can cascade rapidly:

Credential theft: The attacker captures login credentials and gains access to email, cloud storage, or internal systems. From there, they can read sensitive emails, exfiltrate data, or impersonate the victim.
Ransomware delivery: A malicious attachment or link installs ransomware that encrypts your files and demands payment. Recovery without clean backups can take weeks.
Wire fraud: Using compromised email access, the attacker impersonates an executive or vendor and redirects a legitimate payment to their own account. Losses often exceed $50,000.
Data exfiltration: Sensitive client data, financial records, or employee information is stolen and may be sold on the dark web or used for further attacks.
Lateral movement: Once inside one account, attackers move through your network, compromising additional systems and accounts. A single phished employee can lead to a full organizational breach.

How to Protect Your Business

Phishing defence requires a layered approach. No single tool or training program eliminates the risk entirely, but the right combination makes a successful attack far less likely, and limits the damage when one does get through.

Enable Multi-Factor Authentication on Everything

MFA is the single most effective defence against credential theft from phishing. Even if an employee enters their password on a phishing site, the attacker cannot access the account without the second factor. Enable MFA on all Microsoft 365 accounts, VPN access, financial systems, and administrative portals. No exceptions.

Deploy Email Filtering and Anti-Phishing Tools

Modern email security platforms use AI and machine learning to detect phishing emails before they reach your employees' inboxes. Microsoft Defender for Office 365, Proofpoint, and similar tools analyze sender reputation, link destinations, and attachment behaviour to block threats automatically. These tools catch the majority of phishing attempts, but they're not perfect, which is why training remains essential.

Run Regular Phishing Simulations

The best way to train employees to recognize phishing is to test them with realistic simulations. A good security awareness program sends simulated phishing emails on a regular schedule, tracks who clicks, and provides immediate training to those who fall for the simulation. Over time, click rates drop significantly, typically from 30% to under 5% within the first year.

Create a Reporting Culture

Your employees need to feel safe reporting suspicious emails, and safe admitting when they've clicked something they shouldn't have. If people fear punishment for reporting a mistake, they'll hide it, giving the attacker more time to cause damage. Establish a simple reporting process: a dedicated email address, a button in Outlook, or a Slack channel. Acknowledge every report, even false positives. The cost of investigating a false alarm is negligible compared to the cost of a breach that went unreported for days.

What to Do If You've Been Phished

Despite every precaution, someone on your team may eventually click the wrong link or enter credentials on a phishing site. What you do in the first hour matters more than anything else. Here are the immediate steps:

Change passwords immediately: The compromised account and any accounts using the same password need new, unique passwords right away.
Report to your IT team or MSP: Your IT provider needs to know immediately so they can assess the scope and begin containment.
Isolate affected systems: If ransomware or malware is suspected, disconnect the affected device from the network to prevent lateral movement.
Check for unauthorized access: Review sign-in logs, email forwarding rules, and file access history for the compromised account. Attackers often create email forwarding rules to maintain access even after a password change.
Notify affected parties: If client or employee data may have been exposed, you may have legal obligations under PIPEDA to notify affected individuals and the Privacy Commissioner.
Document everything: Record the timeline, actions taken, and findings. This documentation is critical for insurance claims, regulatory reporting, and improving your defences.

The most important thing is speed. The faster you respond, the less damage an attacker can do.

If your business doesn't have a clear incident response plan, ClayGen's cybersecurity services include incident response planning, phishing simulation programs, and 24/7 monitoring that catches compromised accounts before the attacker can act. Contact us to discuss how we can strengthen your defences against phishing and other social engineering attacks.

For the broader view of this topic, see our complete cybersecurity guide for Canadian SMBs.

Phishing Attacks: How to Recognize and Prevent Them