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Defence in depth
Defence in depth is a security strategy where multiple layers of security are used to protect a system or network, thereby increasing its overall resilience against cyber-attacks.
What is defence in depth?
Defence in depth is when multiple layers of defence are used to enhance security. By succesfully utilising defence in depth, organisations effectively minimise the impact of a breach. In the event that one layer is compromised, the presence of additional layers ensures ongoing protection and prevents further damage from occurring.
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Defence in depth is a strategy that relies on a single layer of protection.
Defence in depth is a technique that encourages sharing sensitive information openly.
Defence in depth involves using multiple layers of defence mechanisms to enhance security.
Defence in depth is a term used to describe a complete absence of security measures.
An example of defence in depth is:
Defence in depth is all about layers. One defence strategy is good, but multiple layers make a system exponentially more secure!
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Having a guard dog.
Locking the front door of your house.
Using an alarm system.
All answers combined are an example of defence in depth.
How can you use defence in depth in your everyday job?
Defence in depth is something everyone can do! It's not just for big organisations and cybersecurity professionals. It's your mission to make it tough for the bad guys!
Secure your devices
Step up your password game
Don't fall for phishing
Maintain tight physical security. This includes being mindful of your workstation and locking it up whenever you step away. Sharing your access badges or keys? Not on this watch! And remember, keep your operating system, apps, and devices up-to-date with the latest security patches so they're primed and ready to fend off cyber threats!
Opt for lengthy, intricate passwords incorporating both upper and lowercase letters, numerals, and unique symbols. Steer clear of repeating passwords across numerous accounts and easily decipherable ones. Don't forget to use multi-factor authentication for an extra layer of protection whenever possible!
Do you know what the best defence against phishing is? It's you! Put on your detective hat and approach every surprise email or mysterious message like a riddle waiting to be solved. At a minimum, ask yourself if the sender is legitimate and if the request is authentic.
What is an example of a strong password?
Create strong, unique passwords that include a mix of uppercase letters, lowercase letters, numbers, and special characters. Avoid using personal information and common patterns. Use passphrases or random combinations instead.
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Your pets name.
Your nickname that only your friends know.
Using your company name and the current year.
Two random words with numbers and special characters.
How can you secure your devices?
Keeping your operating system and applications up to date is a great way to secure your devices! Software developers are always working to improve their software and apps, and they release updates to fix bugs and security vulnerabilities.
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Print important data and keep it on your desk as a backup.
Share your device's login credentials with trusted friends.
Regularly update your operating system and applications.
Use easy-to-remember passwords.
What is the MOST effective way to protect yourself from phishing attacks?
Although it's not recommended to use public Wi-Fi networks, the best way to protect yourself is by remaining cautious of unsolicited emails or messages until you can confirm their authenticity.
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Remain sceptical of unsolicited and suspicious emails you receive.
Avoid using public Wi-Fi networks.
Share your personal data on social media sites.
Keep your devices up to date.
Defence in depth strategies can involve people, processes, or technology.
Robust technology measures, stringent processes, and well-trained personnel create multiple layers of protection, ensuring a resilient defence posture against potential threats.
Is the following statement True or False:
When it comes to Defence in depth, you are one of the layers.
By embracing security policies, sticking to best practices, and staying on high alert for potential threats, you're like the secret ingredient that bolsters your organisation's security posture. Employees serve as a critical line of defence by reporting suspicious activities and actively participating in security training programs.
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True
False
The principle of least privilege
This is a security concept in which a user is given the minimum level of access necessary to complete their job functions. Basically, it's like only giving someone the keys they need instead of handing over a whole keyring.
Be mindful of software installation
Keep your guard up
Sometimes sharing is not caring
Often, when installing new software, the program will ask for permissions (like being able to access your camera, microphone, files, etc.). Here, the principle of least privilege suggests you should only grant permissions that are absolutely necessary for the software to function.
This is more about not granting others (like cyber criminals!) privileges on your system. Be careful with email attachments and links, and only download or click on things when you're sure they're safe. One wrong click could inadvertently grant malicious software access to your system.
Let's say you share your work account with a coworker because it makes a certain project easier. While this might seem harmless, it's essentially like giving them all your keys. They now have access to not just what they need for the project, but everything you can access! Instead, each user should have their own account and access levels.
Is the following statement True or False:
The principle of least privilege is about ensuring only one person has privileged access.
The principle of least privilege is about restricting the privileges of each user to have access to only what is necessary for their function. It does not matter if that is multiple people, as long as each person has a legitimate reason to have access, you are still practicing the principle of least privilege.
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True
False
Wrapping up
Armed with the power of knowledge and the right security practices, we aren't just a team - we're a digital dream team. With defence in depth, every layer we implement is a step towards a safer, more secure digital environment.
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