The end-of-year period is one of the busiest times for cybercriminals. With many organisations winding down operations, staff taking leave and online activity peaking, attackers know they have a narrow window where vigilance often drops.
Each year in Australia, the industry sees a measurable increase in phishing campaigns, payment fraud, ransomware incidents and credential-stealing attacks during December and early January.
For organisations aiming to reduce risk while teams take a well-deserved break, understanding the threat landscape is essential. Below are the key risks observed during the holiday season and the practical steps that can mitigate them.
1. Phishing and Social Engineering Surge
Holiday-themed scams are a reliable favourite for cybercriminals. Fake parcel delivery notices, charity donation appeals, gift card incentives and “urgent HR updates” frequently lure users into clicking without thinking. These attacks often mimic well-known brands, making them difficult to distinguish at a glance, particularly as AI tools become more available to cybercriminals.
Mitigation: Encourage staff to verify unexpected emails or SMS messages using trusted channels. Emphasise caution with links and attachments, especially those claiming urgency.
2. Credential Harvesting Becomes More Sophisticated
Attackers leverage convincing replicas of Microsoft 365, Google Workspace, banking and payroll login screens, directing victims there through phishing emails. With multi-factor authentication now common, criminals are increasingly using tactics like MFA fatigue attacks to bypass controls.
Mitigation: Reinforce the importance of checking the browser’s address bar and reporting suspicious login prompts. Ensure MFA is enabled across all critical systems.
3. Payment and Invoice Fraud Targets Finance Teams
December brings a rush of invoicing, supplier payments and end-of-year financial processing. Threat actors take advantage of these workflows, intercepting email chains or impersonating trusted contacts to change bank account details.
Mitigation: Require verbal verification of any changes to payment instructions. Review email forwarding rules and ensure staff know how to identify business email compromise attempts.
4. Ransomware Actors Exploit Reduced Staffing
Attackers understand that IT and security teams operate with reduced headcount during the break. This makes it easier for them to prolong intrusions undetected and deploy ransomware when response times are slower.
Mitigation: Apply critical patches before the shutdown period, confirm backups are complete and offline, and test restoration procedures. Ensure incident response contacts are clear and accessible.
5. Fake Shopping Sites and Malicious Mobile Apps
As gift buying moves online, fraudulent retailers and malicious apps become more common. These often capture card details, credentials or deploy malware onto personal devices that may later connect to work systems.
Mitigation: Promote safe online shopping practices. If staff use personal devices for work, ensure they meet minimum security requirements.
6. Travel and Remote Access Risks Increase
Public Wi-Fi, shared accommodation devices and misplaced hardware create additional exposure during holiday travel. Unsecured networks make it easy for attackers to intercept data or redirect users to malicious pages.
Mitigation: Encourage the use of VPNs on public networks, and verify that devices have screen locks and remote-wipe capabilities enabled.
Preparing for a Secure Holiday Period
Cybersecurity doesn’t pause for the festive season. A small investment in awareness and preparation can prevent major disruptions during a time when teams should be switching off.
Key actions for organisations include:
Conduct a pre-holiday security briefing for staff.
Confirm backup integrity and offline storage.
Patch high-risk systems before the break.
Review access privileges and disable unused accounts.
Ensure incident response processes are current and reachable.
If your business wants guidance ahead of the holiday season, our team is ready to assist.
Stay ahead of threats that can affect your business