What is ransomware: How to react if you are infected and should you pay the hackers?
As cyberattacks are reported around the world, here is everything you need to know.
Hacking by GCHQ 'fundamentally weakens the security of the internet', says UK lawyer
Scarlet Kim, lawyer with Privacy International, will continue to challenge the GCHQ ruling.
CIA director John Brennan: 'Hackers can get into the personal emails of anybody'
The director of the CIA opens up about the threat of cyber fraud after his personal email was hacked last year
Anonymous: Hacker unleashes 17.8GB trove of data from a Turkish national police server
The hacker, believed to be using the pseudonym ROR[RG], chose to release the police files via The Cthulhu.
How a security researcher easily hacked a hospital and its medical devices
Kaspersky Lab security researcher Sergey Lozhkin outlines how he hacked a hospital via WiFi.
Los Angeles: Hackers demand $3m bitcoin ransom from hospital to unlock vital files
LAPD and FBI drafted in to investigate ransomware-style cyberattack at US hospital.
North Korean hackers accused of targeting South Korea with mass spam campaign
Latest hacking campaign from North Korea reportedly targeted South Korean organisations.
UK police arrest 16-year-old suspected of hacking FBI and CIA accounts
The hacker is thought to be part of the notorious 'Crackas With Attitude' (CWA) collective.
VTech hack: Toy manufacturer defends fresh security stance amid strong criticism
The firm's updated terms of service shifts the blame of any future data breach directly onto its users.
FBI hack: ex-special agent says those responsible for DoJ data breach 'have made huge mistake'
FBI to put major resources into finding culprits of Department of Justice hack, says former agent Leo Taddeo.
VTech hack: Microsoft security researcher Troy Hunt slams 'grossly negligent' security approach
Analyst Troy Hunt criticises updated terms and conditions unveiled following a data breach last year.
North Korea hack: 'New World Hackers' take websites offline to protest 'satellite' launch
The impacted websites include the North Korean airline, Air Koryo, and the country's state news agency.
Barclays bank and Interpol cyber-division team up to combat online crime
New cyber-security position is to focus on bolstering intelligence-sharing between the bank and cyber-cops.
US Department of Justice hacked: 9,000 DHS employees exposed, FBI to be next
Hacker claims to have access to 200GB of stolen government data and has said FBI is the next target
Former US government employee pleads guilty for plotting to sell nuclear secrets
Former DoE employee planned to launch a spear-phishing cyber-attack to compromise government-held material.
TaxSlayer data breach leaves thousands of US financial accounts and tax filings at risk
US firm that helps people file tax returns suffered data breach that left more than 8,000 users vulnerable.
Hacks on Ministry of Defence soar with rise in cybertheft of classified material
MoD confirms increased number of hacks in 2015 but refuses to say more to safeguard national security.
TalkTalk counts its losses as financial fallout of cyber-attack reaches up to £60m
In first financial summary of 2016, it is revealed that 100,000-plus customers left after cyber-hack of 2015.
Home Secretary Theresa May proposes civilians help fight cybercrime with new police style powers
Police reform proposals including providing volunteers with powers similar to those of police staff.
Global markets are sitting ducks when weaponised algorithms wage war
It may be matter of time until terrorists use our complex finance systems against us.
Teenagers hack into US intelligence director James Clapper's email, phone account
The hackers accessed Clapper's Verizon account and forwarded incoming calls to the Free Palestine Movement.
Cybercriminals pay crooked call centres to phone banks pretending to be you
Call centres employ multilingual staff to phone banks in their local language to try and extract money.
Bitcoin blackmail refusal sees BTCC hit with cyberattacks
Blackmail attempt is the latest in series of bitcoin ransom campaigns.
Cyberbullying: Chubb offers 'troll insurance' to Britons
American insurer will provide cover of up to £50,000 against cyberbullying.
Cyber Monday 2015: Here is how to protect yourself from cyber-attacks
Guidelines to ensure safe online shopping as hackers target bargain hunters.
TalkTalk hack: No contract termination fees waived unless money stolen says CEO Dido Harding
TalkTalk assured customers that many sensitive details obtained by hackers were incomplete.
TalkTalk hack: Company warned about unencrypted data risk a year ago by consultant Paul Moore
Broadband and phone provider faces huge compensation bill following large-scale data breach.
TalkTalk hack: Online data can't be considered 'genuinely safe' [Video]
Cyberattack could have led to theft of private data from over 4m of its customers.
79 adults and 2 children arrested in Spain over child pornography
Spanish police have detained 81 people in a country-wide child porn crackdown.
Fifa 16 Ultimate Team hack: Cyber criminals trick EA Origin to steal coins from top YouTubers
YouTubers including W2S and NepentheZ have Origin accounts compromised by criminals.