The Ransomware Risk You’re Not Monitoring: Your Vendors

Ransomeware used to be random. Attackers sent out mass emails and just waited to see who clicked, but that’s not how it works anymore. Now attackers pick their targets, and they go after the ones most likey to pay up.

The scale of this is genuinely huge. According to the National Library of Medicine, the 2024 ransomware attack on Change Healthcare knocked out care services across the country, exposed the health data of 100 million people, and ended up costing nearly $2.4 billion. That’s the level of ransomware operates at today, and one of the sneakiest way attackers get in through something companies barely think about: their vendors

What This Shift Means

Because attackers have gotten smarter, companies can’t just lock down their own systems. The real question isn’t “how secure we are” but it’s “how secure is everyone we’ve given access to”. Most companies only really start asking that question after something’s already gone wrong, which is exactly the gap tools like the Black Kite AI Agent are trying to close. It is giving businesses ongoing visibility into vendor risk before it turns into an actual breach.

How Vendors Become the Entry Point

It’s not complicated why attackers go after vendor instead of big companies. Big enterprises spend a ton on email security, network monitoring, secure hosting, and employee training. Attacking them head-on is expensive and often not worth the effort. Vendors, on the other hand, usually run on tighter budgets with weaker security, yet they still have access to the exact same sensitive data attackers are after.

Once an attacker gets into a vendor’s system, they’ve got several ways in, such as shared network access, stolen credentials, or even tempered software updates pushed out through a managed service provider. From the company’s side, none of it looks suspicious, since it’s all coming from a source they already trust. By the time anyone notices, the attacker’s already copied the data they plan to encrypt, leaving the company stuck choosing between paying up or watching their information leak publicly.

What Recovery Really Looks Like

A lot of people assume recovering from ransomware is simple, they can negotiate or refuse, pull from backups, move on. In reality, it’s rarely that clean, especially when the breach started with a vendor instead of your own systems.

Detection is usually the first problem. Security tools are watching your environment, not your vendor’s. So there’s a good chance the attacker got in through a trusted connection long before any alarm went off, quietly studying your systems and grabbing data while everything still looked normal.

Then there’s the backup issue. Even solid backup routines can fall if attackers had enough time inside your systems to corrupt them first. The modern-day dwell times are only gaining speed, thanks to AI-assisted lateral movement and phishing, that “dwell time” keeps shrinking. And even when backup do hold up, restoring everything can still take days, results in real downtime, lost revenue, and damaged trust with customers.

It’s also getting messier for businesses running SQL databases or email systems. After a breach, they’re often left dealing with things like corrupted OST files or locked PST archives.

Having a Smart Vendor Risk Strategy

A yearly vendor questionnaire isn’t enough to catch any of this. Real protection means having visibility into vendor access all the time, not just once a year.

Start by mapping out access, list every vendor connected to your systems and exactly what they can reach. From there, rank vendors by risk. A vendor with access to your email servers is a completely different risk with one with limited, read-only access.

Contrats need to be airtight too. Any vendor handling sensitive data should be required to meet clear security standards, report incidents within a set timeframe, and agree to regular audits, all should be written into contract itself. This kind of accountability is becoming less optional, especially with regulations like CMMC compliance putting more pressure on companies.

Final Thoughts

Attackers usually don’t go for the hardest target, they go for the easiest one. And more often than not, that’s a vendor, not the company itself. Vendors have real access to the systems but rarely the same level of security protecting them. 

At last, every vendor connected to your data is a risk, whether your security policies account for that or not. If a vendor gets breached, it’s still the company that has to deal with it and pay for the recovery. So, the smartest move is building a vendor risk strategy before anything happens, not after.

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