The Australian Cyber Security Centre provides you with up-to-date advice on current threats and vulnerabilities, as well as guidance on mitigation and cyber security best practice.
What is ransomware?
Ransomware is a type of malware that denies access to files or computer systems until a ransom is paid.
Ransomware can get onto your device in the same way as other malware or a virus, for example by:
visiting unsafe or suspicious websites
opening emails or files from someone you don’t know
clicking on ‘malicious’ links in social media and peer-to-peer networks.
How do I recover from ransomware?
Never pay a ransom demanded by ransomware.
There’s no guarantee paying will restore your files, and paying a ransom could make you vulnerable to further attacks. Report the infection and seek help from a cyber security expert.
Europol provides a page to help you unlock your system, called No More Ransom!
The UK National Cyber Security Centre provides a series of steps to help limit the impact of the infection.
How do I prevent ransomware?
Minimise visits to unknown websites and avoid being enticed by clickbait.
Look for the padlock symbol and ‘https’ in the browser address bar when surfing the net.
Install and regularly update antivirus and anti-ransomware software.
Install a firewall to stop traffic from untrustworthy sources getting onto your device.
Keep your operating system and software up to date with the latest versions; this should be done automatically where possible.
Back up your computers and phones regularly, and choose automatic back-ups where possible. Keep back-ups separate from your computer, on separate devices or use a cloud service.
Disable macros in Microsoft Office.
Have an incident response plan ready to dramatically reduce the damage inflicted, ensure a quick recovery and safeguard against future incidents.
Adopt multiple layers of defence against malware; no single mitigation will protect you. You can develop multiple strategies that will improve your resilience and detect malware without disrupting the day-to-day running of your organisation.
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