A sudden increase in junk email can be annoying and concerning, especially if you normally only receive a few spam messages per day and suddenly receive dozens. The good news is that receiving more spam does not automatically mean your email account has been hacked. In many cases, it simply means your email address is being targeted by spammers at that moment.
Your email address may have ended up on a mailing list, been exposed in a past data breach, scraped from a website, guessed by automated spam tools, or shared between spam networks. Once that happens, you may see waves of junk email for a while. Often, it slows down again after the campaign moves on or after email filters learn from the pattern.
Does Spam Mean I Was Hacked?
Not necessarily. Getting spam means someone is sending unwanted messages to your email address. That is different from someone having access to your email account. It is similar to getting junk mail at your house. It means someone knows your address, but it does not mean they have a key to your front door.
You should be more concerned if you see signs that someone may actually be inside your account. Warning signs include emails being sent from your account that you did not send, password reset emails you did not request, login alerts from unfamiliar locations, missing emails, new forwarding rules, strange inbox rules, or contacts telling you they received suspicious messages from you.
What Should You Do When Spam Suddenly Increases?
The safest response is to slow down and avoid interacting with the messages. Do not click links, open attachments, reply, call phone numbers listed in the email, unsubscribe from suspicious messages, or provide passwords, banking details, gift card information, verification codes, or personal information.
If the messages are already going to your Junk or Spam folder, your email filtering is doing its job. You can delete them or report them as junk or phishing. Microsoft recommends using Outlook’s built-in reporting options for suspicious messages, such as reporting junk or phishing messages from within Outlook. CISA (Cybersecurity and Infrastructure Security Agency) also recommends reporting phishing attempts and deleting the message after reporting it.
Should You Block the Senders?
Blocking can help when the junk is coming from the same sender or same domain repeatedly. However, many spam campaigns use different fake sender addresses every time, so blocking each one individually may not stop the wave completely. Outlook does allow users to block senders and domains and manage junk email settings, but blocking is only one part of the solution.
When Should You Change Your Password?
You do not need to change your password every time you receive spam. However, you should change your email password right away if you clicked a suspicious link and entered your password, opened a suspicious attachment, approved an unexpected sign-in prompt, noticed unusual account activity, or received alerts about unfamiliar logins. The FTC (Federal Trade Commission) lists unexpected emails sent from your account and trouble logging in as possible signs of a hacked email account.
When changing your password, use a strong, unique password that is not used anywhere else. If your email account supports multi-factor authentication, it should be enabled. This adds an extra layer of protection even if someone learns your password.
When Should You Contact Your IT Provider?
Contact your IT provider if you clicked a suspicious link, opened an attachment, entered your password, approved a sign-in request, see login alerts you do not recognize, notice missing emails, find strange forwarding rules, or someone tells you they received suspicious emails from you. Those are the situations where a deeper account security review may be needed.
For a normal increase in junk mail where you did not click anything and the messages are going to Junk, the best approach is usually to delete or report them, stay cautious, and monitor the situation. Spam waves are frustrating, but they do not always mean there is an emergency.
Canadian Resources for Spam, Phishing, and Fraud
For Canadians, there are several trusted resources that provide guidance on spam, phishing, fraud, and account security.
The CCCS (Canadian Centre for Cyber Security) provides cybersecurity guidance for individuals, businesses, and organizations in Canada. It offers practical advice on spotting malicious emails, protecting accounts, and responding to cyber incidents.
The CAFC (Canadian Anti-Fraud Centre) collects information on fraud, scams, identity theft, and cybercrime affecting Canadians. If you have been targeted by fraud or lost money, the CAFC (Canadian Anti-Fraud Centre) is one of the main places to report it.
The RCMP (Royal Canadian Mounted Police) is also involved in reporting cybercrime and fraud through Canada’s national reporting systems. If there is an immediate threat, financial loss, identity theft, or criminal activity, local police may also need to be contacted.
The OPC (Office of the Privacy Commissioner of Canada) provides privacy guidance for Canadians, including information about identity theft, privacy concerns, and what to do when personal information may have been exposed.
Get Cyber Safe is a Government of Canada public awareness campaign that provides simple cybersecurity advice for Canadians, including guidance on phishing, passwords, updates, and account protection.
Prevention Is Still Important
Even if a spam increase does not mean you were hacked, it is still a reminder to keep your account secure. Use strong passwords, avoid reusing passwords, turn on multi-factor authentication where possible, keep your computer and software updated, and be careful with unexpected emails that create urgency or ask you to click, download, pay, or confirm private information. Cybersecurity is not just about reacting after something goes wrong. It is about reducing the chances of a small nuisance becoming a bigger problem.