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Atlassian Confluence RCE Flaw Abused in Multiple Cyberattack Campaigns

Atlassian Confluence RCE Flaw Abused in Multiple Cyberattack Campaigns

September 28, 2021Ravie Lakshmanan
Opportunistic threat actors have been found actively exploiting a recently disclosed critical security flaw in Atlassian Confluence deployments across Windows and Linux to deploy web shells that result in the execution of crypto miners on compromised systems. Tracked as  CVE-2021-26084  (CVSS score: 9.8), the vulnerability concerns an OGNL (Object-Graph Navigation Language) injection flaw that could be exploited to achieve arbitrary code execution on a Confluence Server or Data Center instance. "A remote attacker can exploit this vulnerability by sending a crafted HTTP request containing a malicious parameter to a vulnerable server," researchers from Trend Micro  noted  in a technical write-up detailing the weakness. "Successful exploitation can result in arbitrary code execution in the security context of the affected server." The vulnerability, which resides in the Webwork module of Atlassian Confluence Server and Data Center, stems from an insufficient valid
DMARC: The First Line of Defense Against Ransomware

DMARC: The First Line of Defense Against Ransomware

June 28, 2021The Hacker News
There has been a lot of buzz in the industry about ransomware lately. Almost every other day, it's making headlines. With businesses across the globe holding their breath, scared they might fall victim to the next major ransomware attack, it is now time to take action. The FBI IC3 report of 2020 classified Ransomware as the most financially damaging cybercrime of the year, with no major improvement in 2021. Wouldn't it be nice if you could prevent a ransomware attack from occurring in the first place?  DMARC  can make this seemingly impossible claim a possibility for domain owners!  Multiple benefits arise from your DMARC implementation over time, including an increase in the deliverability of your email as well as a higher domain reputation. DMARC is also known as the first line of defense against Ransomware. Let's take a closer look. What are the Risks Associated with Ransomware?  Ransomware is malicious software that installs itself on your computer without your p
Beef Supplier JBS Paid Hackers $11 Million Ransom After Cyberattack

Beef Supplier JBS Paid Hackers $11 Million Ransom After Cyberattack

June 09, 2021Ravie Lakshmanan
Meat processing company JBS on Wednesday confirmed it paid extortionists $11 million in bitcoins to regain access to its systems following a destructive ransomware attack late last month. "In consultation with internal IT professionals and third-party cybersecurity experts, the company made the decision to mitigate any unforeseen issues related to the attack and ensure no data was exfiltrated," JBS USA  said  in a statement, with CEO Andre Nogueira adding the firm made the "very difficult decision" to prevent any potential risk for its customers. Stating that third-party forensic investigations into the incident are still ongoing, the company noted that no company, customer, or employee data was compromised as a consequence of the breach. The FBI officially discourages victims from paying ransoms because doing so can establish a profitable criminal marketplace. JBS, the world's largest meat company by sales, on May 30  disclosed  it fell prey to an "org
LIVE Webinar: Major Lessons to be Learned from Top Cyber Attacks in 2020

LIVE Webinar: Major Lessons to be Learned from Top Cyber Attacks in 2020

February 01, 2021The Hacker News
We likely all agree that 2020 was a year we won't soon forget - for many reasons. One area particularly impacted last year was (and continues to be) cybersecurity.  While Internet access allowed many businesses to continue functioning during the COVID-19 stay at home requirements, the unprecedented number of people accessing company assets remotely introduced many new challenges for cybersecurity professionals. With a history of leveraging societal maladies to their advantage, cyber criminals leverage the confusion and unpreparedness created by the global pandemic in their cyber attacks.  In just the last two months of 2020, several high-profile organizations and government entities were successfully attacked using clever approaches that were overlooked by cybersecurity experts. Making sense of how attacks have changed and what new defensive strategies should be taken is no easy task. Cybersecurity company Cynet will help by reviewing the 2020 high profile attacks in depth and
Uncovered: APT 'Hackers For Hire' Target Financial, Entertainment Firms

Uncovered: APT 'Hackers For Hire' Target Financial, Entertainment Firms

November 12, 2020Ravie Lakshmanan
A hackers-for-hire operation has been discovered using a strain of previously undocumented malware to target South Asian financial institutions and global entertainment companies. Dubbed " CostaRicto " by Blackberry researchers, the campaign appears to be the handiwork of APT mercenaries who possess bespoke malware tooling and complex VPN proxy and SSH tunneling capabilities. "CostaRicto targets are scattered across different countries in Europe, Americas, Asia, Australia and Africa, but the biggest concentration appears to be in South Asia (especially India, Bangladesh and Singapore and China), suggesting that the threat actor could be based in that region, but working on a wide range of commissions from diverse clients," the researchers said. The modus operandi in itself is quite straight-forward. Upon gaining an initial foothold in the target's environment via stolen credentials, the attacker proceeds to set up an SSH tunnel to download a backdoor and a p
Chinese APT Group Targets Media, Finance, and Electronics Sectors

Chinese APT Group Targets Media, Finance, and Electronics Sectors

September 30, 2020Ravie Lakshmanan
Cybersecurity researchers on Tuesday uncovered a new espionage campaign targeting media, construction, engineering, electronics, and finance sectors in Japan, Taiwan, the U.S., and China. Linking the attacks to Palmerworm (aka BlackTech) — likely a  China-based  advanced persistent threat (APT) — Symantec's Threat Hunter Team  said  the first wave of activity associated with this campaign began last year in August 2019, although their ultimate motivations still remain unclear. "While we cannot see what Palmerworm is exfiltrating from these victims, the group is considered an espionage group and its likely motivation is considered to be stealing information from targeted companies," the cybersecurity firm said. Among the multiple victims infected by Palmerworm, the media, electronics, and finance companies were all based in Taiwan, while an engineering company in Japan and a construction firm in China were also targeted. In addition to using custom malware to compromi
Facebook Hacked — 10 Important Updates You Need To Know About

Facebook Hacked — 10 Important Updates You Need To Know About

September 29, 2018Swati Khandelwal
If you also found yourself logged out of Facebook on Friday, you are not alone. Facebook forced more than 90 million users to log out and back into their accounts in response to a massive data breach. On Friday afternoon, the social media giant disclosed that some unknown hackers managed to exploit three vulnerabilities in its website and steal data from 50 million users and that as a precaution, the company reset access tokens for nearly 90 million Facebook users. We covered a story yesterday based upon the information available at that time. Facebook Hack: 10 Important Updates You Need To Know About However, in a conference call [ Transcript 1 , Transcript 2 ] with reporters, Facebook vice president of product Guy Rosen shared a few more details of the terrible breach, which is believed to be the most significant security blunder in Facebook's history. Here's below we have briefed the new developments in the Facebook data breach incident that you need to know abo
Ransomware Attack Takes Down Bristol Airport's Flight Display Screens

Ransomware Attack Takes Down Bristol Airport's Flight Display Screens

September 17, 2018Wang Wei
Bristol Airport has blamed a ransomware attack for causing a blackout of flight information screens for two days over the weekend. The airport said that the attack started Friday morning, taking out several computers over the airport network, including its in-house display screens which provide details about the arrival and departure information of flights. The attack forced the airport officials to take down its systems and use whiteboards and paper posters to announce check-in and arrival information for flights going through the airport and luggage pickup points for all Friday, Saturday, and the subsequent night. "We are currently experiencing technical problems with our flight information screens," a post on the Bristol Airport's official Twitter feed read on Friday. "Flights are unaffected and details of check-in desks, boarding gates, and arrival/departure times will be made over the public address system. Additional staff are on hand to assist passeng
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