Connect with us

Hi, what are you looking for?


Application Security

Ransomware Recovery Startup Calamu Banks $16.5M Investment

Calamu, an early-stage cybersecurity startup building technology to help businesses recover from ransomware infections, has raised $16.5 million in venture capital funding.

Calamu, an early-stage cybersecurity startup building technology to help businesses recover from ransomware infections, has raised $16.5 million in venture capital funding.

The Clinton, New Jersey-based company said the Series A round brings the total raised to $20 million and will be used to accelerate team expansion and further evolve the product platform.

The new financing was led by Insight Partners, with participation from existing seed investor Dell Technologies Capital.

Calamu is working on a nifty approach to securing and protecting data by encrypting and fragmenting data at the source — cloud applications or local file systems — and  scattering individually re-encrypted fragments across big-cloud storage locations such as Amazon AWS, Microsoft Azure, and Google Cloud. 

[ ANALYSIS: Law Enforcement Blowback, Cyber Insurance Renewals Powering Anti-Ransomware Successes ]

According to Calamu, this redundant virtual storage environment (known as a data harbor), helps to eliminate commonly exploited attack vectors because a complete data object doesn’t exist in any one place or provider. 

“Keeping sensitive data out of enemy hands is a top priority for the enterprise given the constant threat of ransomware and increased pressure from regulators. Hackers continue to breach enterprise data systems whether the data is stored in the cloud or on-premises, and have found ways to bypass defensive tactics and cripple operations,” the company said. 

Advertisement. Scroll to continue reading.

Data protected with Calamu is useless to the hacker if stolen, and automatically self-heals if attacked by ransomware,” it added.

Calamu chief executive Paul Lewis explained that the technology prevents attackers from getting anything of value, and allows authorized users and applications to continue accessing pristine data as if nothing happened.

[ READ: Five Key Signals From Russia’s REvil Ransomware Bust  ]

Calamu’s funding round comes as global organizations continue to struggle with an explosion of data-extortion ransomware attacks over the last two years.

According to a new advisory released this week by the U.S. government’s cybersecurity response agency CISA, ransomware continues to be a significant problem for government agencies and businesses of all sizes.

The agency said 14 of the 16 critical infrastructure sectors in the U.S. were targeted by ransomware in 2020 and there’s a noticeable observation this year that ransomware groups are now focused on hitting mid-market targets in the U.S.

Related: REvil Ransomware Gang Hit by Law Enforcement Hack-Back

Related: Colonial Pipeline CEO Explains $4.4M Ransomware Payment

Related: New CISA Boss Unveils Anti-Ransomware Collab with Big Tech

Related: Five Key Signals From Russia’s REvil Ransomware Bust 

Written By

Ryan Naraine is Editor-at-Large at SecurityWeek and host of the popular Security Conversations podcast series. He is a security community engagement expert who has built programs at major global brands, including Intel Corp., Bishop Fox and GReAT. Ryan is a founding-director of the Security Tinkerers non-profit, an advisor to early-stage entrepreneurs, and a regular speaker at security conferences around the world.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

SecurityWeek’s Threat Detection and Incident Response Summit brings together security practitioners from around the world to share war stories on breaches, APT attacks and threat intelligence.


Securityweek’s CISO Forum will address issues and challenges that are top of mind for today’s security leaders and what the future looks like as chief defenders of the enterprise.


Expert Insights

Related Content

Application Security

Cycode, a startup that provides solutions for protecting software source code, emerged from stealth mode on Tuesday with $4.6 million in seed funding.


Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...


WASHINGTON - Cyberattacks are the most serious threat facing the United States, even more so than terrorism, according to American defense experts. Almost half...

Data Breaches

OpenAI has confirmed a ChatGPT data breach on the same day a security firm reported seeing the use of a component affected by an...

Data Protection

The cryptopocalypse is the point at which quantum computing becomes powerful enough to use Shor’s algorithm to crack PKI encryption.


The changing nature of what we still generally call ransomware will continue through 2023, driven by three primary conditions.

Cybersecurity Funding

SecurityWeek investigates how political/economic conditions will affect venture capital funding for cybersecurity firms during 2023.

Artificial Intelligence

The CRYSTALS-Kyber public-key encryption and key encapsulation mechanism recommended by NIST for post-quantum cryptography has been broken using AI combined with side channel attacks.