How Cyber Attacks Go Undetected for Months – And What You Can Do About It
It’s a common misconception that cyberattacks happen in an instant. A click, a breach, a ransom note.
But that’s rarely how it works.
Most threat actors don’t break the door down – they slip through unnoticed and stay for months. Quietly moving through systems. Escalating privileges. Exfiltrating data. And waiting for the right time to strike.
This dwell time – the amount of time an attacker remains in a system before they’re detected – can sometimes be not just hours, but months.
The Truth About Dwell Time
According to IBM, the average global dwell time in 2024 was 258 days. That means the a business is being watched, probed, and quietly compromised for nearly nine months before they even realise something’s wrong.
And that’s not just happening to small organisations with poor defences.
- In January 2024, Microsoft disclosed that attackers accessed the email accounts of senior executives and remained undetected for at least six weeks.
- The British Library was hit by a ransomware attack in October 2023. But systems remained offline well into 2024, suggesting prolonged access well before the incident occurred.
So how does this happen? How do advanced organisations, with enterprise-grade security tooling, still miss the signs?
It’s Not a Lack of Tools – It’s a Lack of Visibility
Most IT and security teams are drowning in dashboards. An average security team uses between 10-50 tools, according to industry studies. Each one generates hundreds, sometimes thousands, of alerts per day.
That’s not visibility. That’s noise.
Real threats don’t always come with flashing warnings. Often, they show up as minor anomalies:
- An unauthorised login from an unusual country.
- An unpatched server sitting idle in the corner.
- A malware alert that got quarantined, but never investigated.
- An MFA policy that was never fully applied.
And they’re easy to miss – not because the tools didn’t catch them, but because no one had the time (or clarity) to connect the dots.
The Human Cost of Alert Fatigue
When teams are inundated with alerts, log files, and overlapping reports, critical signals get buried. We’ve seen incidents where red-flag alerts indicative of a full-domain compromise sat unnoticed for weeks.
This isn’t about blaming people. It’s about recognising the limits of overloaded teams and fragmented tooling.
To detect threats early, you don’t necessarily need more tools. You need better visibility – the kind that highlights the signals that matter and helps you act on them fast.
So, What’s the Right Step Forward?
You can’t prevent every breach. But you can drastically reduce the time it takes to detect and respond to threats, and that’s where real impact lies.
That’s where Clevr360 is a valuable asset for your business.
Clevr360 gives you a clear, connected view of your Microsoft 365 environment, surfacing hidden risks, missed security settings, and usage patterns that could indicate a potential breach.
Instead of reacting to 1,000 alerts, you get actionable insight into:
- Where your Secure Score is falling short (and why)
- Which configurations or MFA settings leave you exposed
- What tools and licenses are being ignored or underused
With Clevr360, what normally takes 50 clicks in multiple portals takes less than 10 – all in one place.
It’s not a replacement for your existing tools. It’s the missing layer of clarity to make them work better together.
What You Can’t See Will Hurt You
There’s no silver bullet. Anyone can get breached – even the most secure businesses in the world.
But the earlier you detect a threat, the easier it is to contain.
And when you can see the blind spots, you can act before those small issues become major incidents.
A Clevr360 Insights Review shows you what you’re missing. And helps you fix it – fast.
Book your complimentary Clevr360 Insights Review and find out what’s hidden in your Microsoft 365 environment.
That’s Clevr.
