How Machines Can Lead the Fight: AI and Incident Response

Many businesses are embracing artificial intelligence in some shape or form. Legal firm Pillsbury predicts that AI spending in cyber will soar, rising to potentially $46.3 billion by 2027. Mimecast has found that around half of companies have already adopted machine learning or AI — with benefits including more accurate threat detection, reduced human error, and better threat prevention.

This is because AI tools becoming more sophisticated, but also because AI is a great fit for today’s threats. As networks have become more complex and distributed thanks to trends such as the rise of remote work, AI’s ability to analyze millions of security events across different platforms has become increasingly valuable. Its speed in detection and response, meanwhile, means AI can often stop incursions before they turn into the modern cybersecurity nightmare: a ransomware attack.

Here we'll show what AI can do, and what it can’t — and why its role in incident response can be a game-changer.

Real AI Is Capable of Learning

AI can be transformative, but organizations should still look carefully before they leap. AI has a bit of a marketing problem, with many solutions out there claiming to be AI but are actually nothing of the sort. Many offerings use automated tools to analyze data and act on the results, but while these static processes may be sophisticated and useful, they fall under data analytics, not AI.

Real AI uses overlapping approaches such as machine learning (in which the AI applies algorithms and statistical models to data, and builds on the results), neural networks (weighted decision making) and deep learning (a multi-layered, artificial neural network). It has knowledge, intelligence, and the ability both to learn, and to use that learning.

These characteristics allow AI cybersecurity tools to constantly gather and analyze data, spotting patterns at an almost unimaginable scale. It can scan your assets, survey the threat landscape, and even predict breaches. The more data and more networks it has access to, the more useful it becomes.

Why AI Plays a Crucial Role in Incident Detection

Artificial intelligence’s incident response capability starts early. Security checks, behavioral analytics, monitoring, and intelligent prediction help AI identify anomalies across users, servers, and software. When it comes to large pattern analysis across a distributed network, AI beats human observers hands-down.

By combining constant monitoring with information about past incidents and behaviors, AI can both spot and evaluate risks. Rather than simply relying on signatures to identify malware, AI can assess various characteristics — such as encrypting multiple files at once, or seeking to hide from observation — to assess the danger software may pose.

AI Is More Than Just a Messenger — It Can Play an Active Role in Response

AI can reduce alert fatigue and mute the background noise that can drive analysts up the wall. By spotting issues early, it enables security teams to triage or fight back against incidents fast, preventing them from escalating. But while its role as facilitator is crucial, AI is increasingly playing a more active role.

It can identify repetitive and relatively routine tasks by assessing the level of risk and the amount of context it has, then respond to such incidents at scale. For example, automatically shutting down a device that has been infected by ransomware is an easy win that can avert a major incident.

For more serious or complex incidents, AI can use its knowledge of resources — such as the availability and expertise of engineers — to suggest how an incident can be managed. Teams will be able to hit the ground running, too. Multiple data streams can be collated and pulled into a report for workers to scan and decide on a course of action.

Cyberattackers Use AI, and So Should You

Of course, AI isn’t just used by the good guys. Attackers may use machine learning to identify vulnerabilities before seeking to exploit them via phishing or distributed denial of service (DDoS) attacks, and may even use AI to personalize social engineering emails. Organizations should use machine learning to identify and manage such attacks.

AI is also a part of the wider incident landscape. Its ability to scan great swathes of your networks at speed can help you recover from incidents in shorter timeframes. It can surface the root causes of vulnerabilities and put data and analysis at your fingertips, helping CISOs make a case for future cybersecurity measures, and safeguard against future incidents.

But AI Isn’t Everything

For all its potential, AI still has its limitations. To be effective, AI must be done right, with tools integrated into your existing ecosystem and adjusted for your workflows.

It’s also worth taking some of the boldest claims about AI with a pinch of salt. While such systems will learn from the changes around them, they can be blindsided by shifts that might seem obvious to a human observer. AI’s ability to identify anomalies can be hugely useful, but it can still leave thousands of false positives to investigate, especially if it’s drawing from a limited data pool. The truth is that AI is a tool that is only as good as the people using it. AI can support human teams and extend their capabilities, but it is no match for human insight yet. But the right security team, supported by the right AI tools, can make a tremendous difference to your cybersecurity posture.

The Bottom Line

As organizations’ attack surfaces become distributed and complex, AI’s ability to operate at scale and with relative autonomy has become crucial for cybersecurity. And it isn’t just about threat detection: as we’ve seen, incident response is a growing area in which AI can transform companies' efforts.

AI is not a one-stop solution in which you can invest instead of other solutions: rather it should be used to augment the defenses you already have, from firewalls and threat hunting to human-risk-centric security and awareness training and zero trust. Use it wisely, and artificial intelligence can reduce risk, manage routine incidents, and free up your security team to direct their expertise where it is needed most.

**This blog was originally published on August 17, 2022.