Cybersecurity Weekly: BlackCat ransomware, Training employees in ransomware, most exploited vulnerabilities in 2021
The threat posed by BlackCat ransomware is bigger than we know, how training employees about ransomware can mitigate cyber risk and the 15 most exploited vulnerabilities in the last year. All these and more in this week’s edition of Cybersecurity Weekly.
1. Why the BlackCat ransomware is a bigger threat than we can imagine
BlackCat, also known as ALPHV, is a relatively new group of cybercriminals that operates a Windows ransomware-as-a-service.
2. The 15 most commonly exploited vulnerabilities in 2021
The Log4Shell vulnerability topped the list of 15 most exploited by cyber actors, according to cybersecurity agencies.
3. How Training Employees About Ransomware Can Mitigate Cyber Risk
Ransomware has been on the rise, making headlines and entering boardroom discussions, with more than one-third of businesses globally reporting being hit with ransomware in 2021.
4. How businesses should react to data breaches
While there are many unanswered questions from the Block (formerly called Square) data breach, the organization’s flaw is actually not as uncommon or shocking as many readers might think.
5. Report: 78% increase in ransomware attacks in last year
An independent survey from Sophos published on April 27 found that 66% of organizations globally were hit by a ransomware attack last year, a 78% increase from the year before.
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In this Series
- Cybersecurity Weekly: BlackCat ransomware, Training employees in ransomware, most exploited vulnerabilities in 2021
- Canada Flipper Zero ban and new RustDoor macOS malware
- AnyDesk hack and iPhone patched kernel flaw
- Tesla Pwn2Own hacks and iOS push alerts abuse
- TeamViewer breach and Atlassian Jira outage
- Moscow ISP revenge hack and Microsoft Sharepoint bug warning
- X verified accounts hack and SpectralBlur macOS malware
- CISA default password alert and SOHO KV-botnet campaign
- New 5G modem flaws and Apple’s data breach report
- Staples cyberattack, Agent Racoon backdoor and other news
- British Library ransomware attack, Windows fingerprint authentication bypass
- Samsung UK data breach and ransomware actor’s SEC complaint
- ICBC ransomware attack and ChatGPT outage
- Boeing Lockbit ransomware attack, Apple’s vulnerability and WhatsApp mods spyware
- Octo Tempest hacking group and new iLeakage attack
- Okta support system breach and Google Ads fake KeePass campaign
- Skype DarkGate malware, Shadow PC breach and AvosLocker ransomware warning
- 23andMe data theft, MGM’s $100M ransomware loss and the Azure VM breach
- Malicious Bing Chat ads and FBI’s dual ransomware warning
- T-Mobile app glitch and fake Booking.com pages
- Airbus data leak, Cisco Webex ad malware and €345 million TikTok fine
- New Apple iMessage exploit and CISA’s Apache RocketMQ warning
- Forever 21 data breach and Android BadBazaar espionage
- Duolingo data leak and the Met Police IT hack
- Discord.io data breach and Ivanti Avalanche vulnerabilities
- UK Electoral Commission hack and Microsoft’s role in China email breach
- Salesforce email zero-day exploit and Microsoft Power Platform criticism
- Airlines disclose pilot data breach and the Microsoft Teams bug
- GravityRAT Android Trojan and new MOVEit Transfer flaw
- University of Manchester hack and Honda API flaws
- MOVEit zero-day exploit and the U.S. iPhone hack accusation
- Daam Android virus and Barracuda zero-day flaw
- TP-Link router exploit and 18-year-old charged with hacking DraftKings accounts
- Discord support hack and Toyota location data leak
- Twitter private tweets bug and Cisco phone router vulnerabilities
- Cisco XSS zero-day flaw and PaperCut vulnerabilities
- 3CX hackers hit critical infrastructure and secondhand routers cause security concerns
- Hyundai data breach and Microsoft’s warning to accountants
- Western Digital cloud breach and the MSI ransomware hack
- TMX loan data breach, Italy bans ChatGPT and WordPress Elementor Pro exploit
- ChatGPT data leak and Gmail message theft by North Korean hackers
- U.S. federal agency hack and the return of FakeCalls Android malware
- Massive AT&T data breach and fake jobs targeting security researchers
- U.S. Marshals service breach and TPM 2.0 security flaws
- Dangerous ChatGPT apps and food giant Dole ransomware attack
- GoDaddy malware installations, record-breaking DDoS attack and the new WhiskerSpy malware
- Reddit’s employees phished, healthcare firms targeted and the new Screenshotter malware
- JD Sports data breached, VMware ESXi servers attacked and the HeadCrab malware
- Yandex source code leaked, 4500+ WordPress sites hacked and the new SwiftSlicer malware
- PayPal accounts breached, Fortinet VPN flaw exploited, and the new Hook malware
- Twitter users’ emails leaked, ChatGPT used to write malware and Slack’s repository breach
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