Monitoring Twitter mentions of vulnerabilities may be twice as effective as CVSS scores at helping organizations prioritize which bugs to patch first, according to new research.

Kenna Security’s latest report, Prioritization to Prediction, Volume 8: Measuring and Minimizing Exploitability, was compiled with help from the Cyentia Institute.

It confirmed what many security experts have been saying for some time: the sheer volume of CVEs discovered today means organizations must get better at prioritizing which vulnerabilities to fix.

Although an average of 55 bugs were discovered every day in 2021, the good news is that only 4% posed a high risk to organizations, according to the research. It went further, claiming that 62% of the vulnerabilities studied had a less than a 1% chance of exploitation, while only 5% exceeded a 10% probability.

To arrive at its findings, Kenna Security used an industry-devised Exploit Prediction Scoring System (EPSS), which uses CVE information and real-world exploit data to predict “whether and when” vulnerabilities will be exploited in the wild.

Not all vulnerability management strategies are created equal, argued Kenna Security co-founder and CTO, Ed Bellis.

“Prioritizing vulnerabilities with exploit code is 11 times more effective than CVSS scores in minimizing exploitability. Mentions on Twitter, surprisingly, also have a much better signal-to-noise ratio than CVSS (about two times better),” he wrote.

“We also learned that, given the choice, it’s far more effective to improve vulnerability prioritization than increase remediation capacity … but doing both can achieve a 29-times reduction in exploitability.”

Bellis concluded that prioritizing bugs via exploitability rather than technical CVSS scores is “the strategy of the future” and one that US government security experts appear to be taking.

“The data shows that taking this more measured approach of prioritizing exploitability over CVSS scores is the way to go and the recent Cybersecurity and Infrastructure Security Agency (CISA) directive agrees,” he argued.

Nigerian police have arrested 11 more suspected members of a prolific business email compromise (BEC) gang that may have targeted hundreds of thousands of organizations.

Interpol coordinated Operation Falcon II with the Nigerian Police Force (NPF) over 10 days in December 2021, having sought input from other police forces across the globe investigating BEC attacks via its I-24/7 communications network.

Those arrested are thought to be part of the Silver Terrier (aka TMT) group. One individual had the domain credentials of 800,000 potential victims on his laptop, while another was monitoring online conversations between 16 companies and their clients and diverting funds to TMT, Interpol claimed.

A third is suspected of BEC attacks across West Africa, including Nigeria, Gambia and Ghana.

Any intelligence and evidence gleaned from the operation will be fed into Interpol’s Global Financial Crime Taskforce (IGFCTF) to help prevent further fraud.

“Operation Falcon II sends a clear message that cybercrime will have serious repercussions for those involved in business email compromise fraud, particularly as we continue our onslaught against the threat actors, identifying and analyzing every cyber trace they leave,” said Interpol director of cybercrime, Craig Jones.

“Interpol is closing ranks on gangs like SilverTerrier. As investigations continue to unfold, we are building a very clear picture of how such groups function and corrupt for financial gain. Thanks to Operation Falcon II we know where and whom to target next.”

The first iteration of this anti-BEC campaign was run in 2020 and resulted in the arrest of three TMT suspects. The gang was thought to have compromised as many as 500,000 victim organizations by that time, according to Group-IB, which was involved in both operations.

“Group-IB’s APAC Cyber Investigations Team has contributed to the current operation by sharing information on the threat actors, having identified the attackers’ infrastructure, collected their digital traces and assembled data on their identities,” it explained in a statement.

“Group-IB has also expanded the investigation’s evidence base by reverse-engineering the samples of malware used by the cyber-criminals and conducting the digital forensics analysis of the files contained on the devices seized from the suspects.”

The International Committee of the Red Cross (ICRC) has revealed a major data breach that compromised the personal details of over 515,000 “highly vulnerable” victims.

It was stolen from a Swiss contractor that stores the data on behalf of the global humanitarian organization headquartered in Geneva.

The ICRC claimed it originated from at least 60 Red Cross and Red Crescent National Societies worldwide.

Some of the most vulnerable members of society are affected, including individuals separated from their families due to conflict, migration and disaster, missing persons and their families and people in detention, it added.

“An attack on the data of people who are missing makes the anguish and suffering for families even more difficult to endure. We are all appalled and perplexed that this humanitarian information would be targeted and compromised,” said Robert Mardini, the ICRC’s director-general.

“This cyber-attack puts vulnerable people, those already in need of humanitarian services, at further risk.”

There’s no indication the information has been shared publicly yet, but that’s no guarantee it won’t be in the future. That’s why Mardini pleaded with the threat actors not to leak or sell the spoils of its attack.

“Your actions could potentially cause yet more harm and pain to those who have already endured untold suffering,” he said.

“The real people, the real families behind the information you now have are among the world’s least powerful. Please do the right thing. Do not share, sell, leak or otherwise use this data.”

Given financially motivated cyber-criminals have targeted hospitals with ransomware in the past, there’s certainly no guarantee that Mardini’s words will be heard. Nor is it clear whether it was a criminal rather than a state-sponsored attack.

As a result of the attack, the ICRC said it had been forced to shut down its Restoring Family Links service, which it claims reunites 12 missing people on average with their families every day.