threats to networks

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Malware
written to cause loss of data, encryption of data and data theft
How to prevent vulnerabilities from malware?
Install updates for OS system, instal anti-malware/virus software, take backups of files.
Phishing
Sending emails that look like they're from legit companies to try to get people to give away personal info.
How to prevent vulnerabilities from phishing?
Enable anti-spam filters, disable browser popups, train staff to recognise fake pages/emails.
Brute force attack
A trial and error way of attempting passwords, usually done by automated software.
How to prevent vulnerabilities from brute force attacks.
User and password delays after a certain number of attempts, policy to lock accounts after a certain number of invalid login attempts, use CAPTCHA, train staff to use strong passwords.
Denial of service attack
Flooding a server with so much traffic that the network becomes slow or inaccessible.
How to prevent vulnerabilities from denial of service attacks.
Keep firewalls up to date, ensure all network policies are in place and enforced, carry out network forensics regularly.
Data interception and theft.
Intercepting and stealing data using 'packet sniffers', criminals can steal logins passwords, PINs etc.
How to prevent vulnerabilities from data interception theft.
Carry out network forensics regularly, train staff to lock their devices, ensure all data is encrypted.
SQL injection.
Inputting specially created commands into website login pages to gain access to the database.
How to prevent vulnerabilities from SQL injections.
User access rights to database are in place, carry out penetration testing, parameter inquiries.
Name 5 types of malware.
Virus, worm, trojan, spyware and ransomware.
Virus
Viruses attach to certain files then when user opens the file they activate and usually have a harmful effect.
Trojan
Disguised as legit software so user doesn't realise when they download them. They are annoying or malicious.
Spyware
Monitors user actions secretly.
Ransomware
Usually delivered by phishing and user clicks on link and receives a threat.
Worm
Like a virus only it replicates by itself without the need of user help, so they can spread very quickly.
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