Search: “denial of service”

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CategoryAll Vulnerability 1450 Malware 612 Ransomware 585 Exploit / PoC 504 Threat actor 199 Data breach 182 Policy & legal 178 Industry 106 Advisory 100 Phishing & fraud 64 Research 24 AI safety & security 14 AI tools & infra 9 Tools 8

SeverityAll critical 1933 high 995 medium 828 low 253 info 33

New Zealand stock exchange (NZX) halted 2 days by DDoS attack

Security AffairsAug 27, 11:22 UTC · Aug 27, 2020Ransomware

45

Akamai prevented largest DDoS attack on a US financial company

Security AffairsSep 10, 13:22 UTC · Sep 10, 2023Ransomware

57

'doorLock' - A persistent denial of service flaw affecting iOS 15.2

Security AffairsJan 3, 22:24 UTC · Jan 3, 2022Ransomware

57

Why Holidays Put Your Company at Risk of Cyber Attack (And How to Take Precautions)

The Hacker NewsDec 9, 11:40 UTC · Dec 9, 2021Ransomware

60

Serial crook posed as Anonymous and extorted news websites with DDoS, officials say

CyberScoopJul 28, 13:48 UTC · Jul 28, 2017Ransomware in the wild

60

Cyber threats to EU transport sector sends urgent call for enhanced cybersecurity

Help Net SecurityMar 23, 00:00 UTC · Mar 23, 2023Ransomware

60

ENISA: Ransomware became a prominent threat against the transport sector in 2022

Security AffairsMar 22, 14:00 UTC · Mar 22, 2023Ransomware

60

Threat Source newsletter (Dec. 12, 2019)

Cisco TalosDec 12, 19:00 UTC · Dec 12, 2019Ransomware

60

Imperva Thwarts 2.5 Million RPS Ransom DDoS Extortion Attacks

The Hacker NewsMar 6, 06:47 UTC · Mar 6, 2022Ransomware CVE-2018-14847

60

Threat Source newsletter (Nov. 21, 2019)

Cisco TalosNov 21, 19:00 UTC · Nov 21, 2019Ransomware

57

Citrix users hit by actively exploited zero

CyberScoopJun 25, 20:38 UTC · Jun 25, 2025Ransomware in the wildCVE-2025-6543 CVE-2025-5777 CVE-2025-5349+1 CVEs

60

Some Synology products impacted by recently disclosed OpenSSL flaws

Security AffairsAug 29, 07:01 UTC · Aug 29, 2021Ransomware CVE-2021-3711 CVE-2021-3712

60

Silence Hacking Crew threatens Australian banks of DDoS attacks

Security AffairsFeb 26, 11:45 UTC · Feb 26, 2020Ransomware

57

Unexplained cyberattacks sow chaos among dark web markets

CyberScoopOct 30, 19:36 UTC · Oct 30, 2017Ransomware in the wild

60

Security and the Internet of Things

Schneier on SecurityJan 27, 14:16 UTC · Jan 27, 2020Ransomware

60

How many can detect a major cybersecurity incident within an hour?

Help Net SecurityApr 11, 00:00 UTC · Apr 11, 2018Ransomware

57

9 Free Cybersecurity Whitepapers You Should Read

Help Net SecurityJun 5, 00:00 UTC · Jun 5, 2023Ransomware

60

Criminals leverage unsecured IoT devices, DDoS attacks surge

Help Net SecurityOct 18, 07:42 UTC · Oct 18, 2018Ransomware

45

The Log4j flaw is the latest reminder that quick security fixes are easier said than done

CyberScoopDec 21, 22:09 UTC · Dec 21, 2021Ransomware in the wild

60

Blocked DDoS attack volumes up, tech, healthcare and finance most targeted

Help Net SecurityAug 5, 00:00 UTC · Aug 5, 2021Ransomware

57

Cryptomining attacks against Apple devices increase sharply

Help Net SecurityOct 16, 00:00 UTC · Oct 16, 2018Ransomware CVE-2017-7269 CVE-2017-5638 CVE-2016-6309

60

Threat Source newsletter (March 26, 2020)

Cisco TalosMar 26, 18:00 UTC · Mar 26, 2020Ransomware CVE-2020-3266

60

Information of Air Canada employees exposed in recent cyberattack

Security AffairsSep 22, 13:17 UTC · Sep 22, 2023Ransomware

57

Cisco Talos Incident Response

Cisco TalosDec 19, 16:45 UTC · Dec 19, 2025Ransomware

57

Features

Cisco TalosSep 6, 20:43 UTC · Sep 6, 2022Ransomware

57

US telecommunications company likely targeted by Russian hackers shares details of Feb. 24 attack

CyberScoopMar 30, 17:29 UTC · Mar 30, 2022Ransomware in the wild

60

The FBI warns of the consequences of TDoS attacks

Security AffairsFeb 21, 14:57 UTC · Feb 21, 2021Ransomware

45

Threat Source newsletter (Feb. 6, 2020)

Cisco TalosFeb 6, 19:00 UTC · Feb 6, 2020Ransomware in the wild

60

Nearly 800,000 SonicWall VPNs Need Critical Flaw Patching

Infosecurity MagazineOct 16, 10:20 UTC · Oct 16, 2020Ransomware

60

How geopolitical turmoil changed the cybersecurity threat landscape

Help Net SecurityNov 8, 00:00 UTC · Nov 8, 2022Ransomware

60

Cybercriminals are becoming more methodical and adaptive

Help Net SecurityApr 26, 00:00 UTC · Apr 26, 2019Ransomware

60

⚡ Weekly Recap: Cisco 0-Day, Record DDoS, LockBit 5.0, BMC Bugs, ShadowV2 Botnet & More

The Hacker NewsOct 6, 11:28 UTC · Oct 6, 2025Ransomware CVE-2025-20362 CVE-2025-20333 CVE-2025-20363+15 CVEs

60

IR Trends: Ransomware on the rise, while technology becomes most targeted sector

Cisco TalosJul 25, 10:00 UTC · Jul 25, 2024Ransomware1

60

Fact or fiction, hacktivists' claims of industrial sabotage in Russia or Ukraine get attention online

CyberScoopMar 22, 13:40 UTC · Mar 22, 2023Ransomware in the wild

60

Operation PowerOFF: 53 DDoS domains seized and 3 Million criminal accounts uncovered

Security AffairsApr 17, 13:39 UTC · Apr 17, 2026Ransomware

45

Avoslocker ransomware gang targets US critical infrastructure

Security AffairsMar 19, 17:03 UTC · Mar 19, 2022Ransomware

60

PwnedPiper PTS Security Flaws Threaten 80% of Hospitals in the U.S.

The Hacker NewsAug 12, 13:04 UTC · Aug 12, 2021Ransomware CVE-2021-37161 CVE-2021-37162 CVE-2021-37163+5 CVEs

60

Ransomware attacks hit record level in UK, according to neglected official data

The RecordSep 12, 11:42 UTC · Sep 12, 2023Ransomware

57

Malicious web application requests skyrocketing, bad actors stealthier than ever before

Help Net SecurityMar 15, 00:00 UTC · Mar 15, 2022Ransomware

60

HelloKitty ransomware gang also targets victims with DDoS attacks

Security AffairsNov 1, 18:47 UTC · Nov 1, 2021Ransomware CVE-2021-20016 CVE-2021-20021 CVE-2021-20022+1 CVEs

60