Hacking
Hacking is the exploitation of weaknesses in a computer system or network to gain unauthorised access to computer systems, networks or accounts for personal gain or malicious purposes. Usually, this involves:
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Stealing sensitive information,
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Disrupting services or
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Causing financial harm.
Hacking is carried out in various ways, such as:
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Social engineering,
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Hacking of passwords and
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Using malware to infiltrate users' devices.
Website Defacement
Website defacement is a form of cybercrime where perpetrators gain unauthorised access to a website’s server or Content Management System (CMS) to alter the contents and the appearance of the website.
Usually, these perpetrators display their own messages or other content with the intent of sending a message or disrupting the normal operations or reputation of the website.
Visit the SingCERT webpage for more resources.