Business email has become fraudsters’ top target. A single compromised inbox can hand over your invoices, your client contacts, your passwords, even your bank accounts. For an SMB in Trois-Rivieres or anywhere else in Mauricie, a hacked email account isn’t a minor technical hiccup. It’s an open door into your entire business.

The good news is that a hacked email account almost always leaves traces. Once you know what to look for, you can act before the damage spreads. Here’s how to tell if your email has been hacked, how to check in a few minutes, and above all, what to do right away to take back control.

1. Signs of a hacked email account

A hacked email account often gives itself away through small details that don’t add up. The sooner you spot them, the sooner you limit the damage. Here are the most common warning signs to watch for in your Microsoft 365, Outlook, or business Gmail inbox.

• Emails sent from your account that you never wrote.
• Contacts telling you they’ve received odd messages or suspicious links from your address.
• Emails disappearing or turning up in the trash for no reason.
• Inbox rules created without your knowledge, for example to automatically forward or delete certain messages.
• Password reset requests you never triggered.
• An alert about an unusual sign-in from another country or a device you don’t recognize.

If you notice even one of these signs, treat it as an emergency. A patient attacker can monitor your inbox for weeks before striking, often timing it around an invoice payment.

2. Check if your address appears in a data breach

Many accounts aren’t hacked directly. Instead, your address and password end up in a data breach from another site and get resold from there. These lists circulate on the dark web and give fraudsters what they need to try logging into your other accounts.

To check, use a trusted breach monitoring service like Have I Been Pwned, which tracks billions of addresses exposed in known breaches. Enter both your work and personal addresses. If either one turns up, assume the associated password is public and change it everywhere you’ve reused it.

The real danger is reusing the same password across multiple services. One breached site and all your accounts become vulnerable. That’s exactly what attackers count on.

3. What to do right away if your email is compromised

Once you’re sure, or even just suspect, your email has been hacked, every minute counts. Each hour gives the fraudster more time to send fake invoices or break into other accounts. Follow these steps in order.

• Change your password immediately, from a clean device, using a long, unique password.
• Turn on two-factor authentication to block the attacker from logging back in.
• Check for and remove any automatic forwarding or deletion rules set up in your inbox.
• Sign out of all active sessions to kick the intruder off your devices.
• Warn your contacts and clients that they may receive fake messages under your name.
• If sensitive data is involved, document the incident to meet your obligations under Quebec’s Law 25.

For a business inbox, these steps get complicated fast, especially when several employees are affected. A managed IT services team can lock down every account, assess the scope of the breach, and restore confidence quickly.

4. How to protect your email long term

Reacting to a hacked email account is good. Preventing it is better. Most compromises can be avoided with a handful of basic measures applied across the whole company, not just for management.

• Turn on two-factor authentication for every Microsoft 365 account, no exceptions.
• Use a password manager to generate unique, complex passwords.
• Train your employees to spot phishing, the main entry point for attackers.
• Set up advanced email filtering to block malicious messages before they land.
• Monitor for suspicious sign-ins and set up automatic alerts.

These protections need ongoing attention. If your SMB doesn’t have an in-house IT team, it’s worth handing this monitoring to a local partner. Feel free to reach out to a specialized team to assess your current risk level.

5. Why Mauricie SMBs are targets

Many business owners assume their company is too small to interest attackers. That’s exactly what makes them easy targets. These attacks are automated: fraudsters cast a wide net and go after the least protected inboxes, regardless of size or location.

In Trois-Rivieres, as everywhere in Quebec, SMBs handle valuable data: banking details, client personal information, contracts. A hacked email account can lead to wire fraud, identity theft, or reputational damage that’s hard to undo. Investing in prevention always costs less than managing a crisis.

Frequently asked questions

How can I check for free if my email has been hacked?

Enter your address into a service like Have I Been Pwned, which tells you for free whether it appears in a known breach. Also watch for direct warning signs: suspicious outgoing messages, sign-in alerts, and unsolicited password reset requests.

My email was hacked. Should I create a new address?

Not necessarily. In most cases, changing your password, turning on two-factor authentication, and clearing out any rogue rules is enough to regain control. Creating a new address adds complexity and won’t stop another breach if the same bad habits continue.

Can a hacked email infect my computer?

The account itself doesn’t directly infect your device, but attackers use it to send malicious attachments or links. If you’ve clicked on a suspicious link, have your machine scanned by a professional to rule out spyware.

Protect your business email in Trois-Rivieres

A hacked email account never happens at a good time, but with the right reflexes and a bit of support, your SMB can recover from it and come out better protected. Our team in Trois-Rivieres helps Mauricie businesses secure their Microsoft 365 accounts and train their staff. Check out our cybersecurity and managed IT services or get in touch with us for a quick assessment of your situation.