Guide: Alert Overload and Handling for Lean IT Security Teams

Alarming research reveals the stress and strains the average
cybersecurity team experiences on a daily basis. As many as
70% of teams^[1]
report feeling emotionally overwhelmed by security alerts. Those
alerts come at such high volume, high velocity, and high intensity
that they become an extreme source of stress. So extreme, in fact,
that people’s home lives are negatively affected. Alert overload is
bad for those who work in cybersecurity. But it’s even worse for
everyone who depends on cybersecurity.

This is a gigantic issue in the industry, yet few people even
acknowledge it, let alone deal with it. Cynet aims to correct that
in this guide (download here^[2]), starting by shining a
light on the cause of the problem and the full extent of its
consequences and then offering a few ways lean security teams can
pull their analysts out of the ocean of false positives and get
them back to shore. It includes tips on how to reduce alerts using
automation and shares guidance for organizations that are
considering outsourcing their managed detection and response (MDR).
The guide also shares how security teams can detangle the web of
security tools necessary for automation.

Solving alert overload

Security teams of all sizes need to reduce the number of alerts
they encounter and refine how they respond to alerts to take action
before the damage starts. Below are tactics covered in the guide
that security teams, especially lean ones, can use to reduce and
respond to thousands of alerts.

1 — Consider outsourcing to MDR: Outsourcing
managed detection and response (MDR) is a good option if you need
to scale quickly and don’t have the resources. MDRs can help reduce
stress and give your team time back. Another consideration is cost.
You also will need to invest time in finding an MDR that’s right
for your business. As the guide shows, outsourcing can absolutely
be an asset. But it’s never a complete solution.

2 — Strategize reducing alerts: It starts
with strategy. Look at your existing tech and make sure you’ve
optimized their settings and your tools are calibrated. Ultimately,
it’s not about reducing alerts so much as it’s about how you’ve set
your team up to respond.

For example, find ways to expedite how you investigate alerts
that you can’t eliminate or aggregate. One way is to correlate
alarms with known activities, like when a planned patch
installation disables security tools in bulk as the system
recycles. Any other time, the security team would want to know that
security tools are going offline, but there’s a simple explanation
during patching. Calibrating tools to “quiet” alerts during known
events or scheduled times will give the security team more time to
focus on the actual emergencies.

3 — Introducing automated response: Even the
leanest security teams can tackle threats if they use automation.
Automation allows security teams to respond to alerts at scale
quickly. But one of the biggest challenges with automation is
knowing how to set it up in the first place properly.

One of the downsides of automated response we need to try to
avoid, happens when an automated response, particularly the kind is
driven by machine learning, blocks both malicious and legitimate
traffic. These unpredictable instances can be annoying for the
security team and for users throughout the organization. Problems
can also be hard to undo if the actions taken by automation haven’t
been carefully documented along the way. The guide suggests new
ways to solve this problem as well.

4 — Use tools that facilitate automation:
Setting up automation is not a ‘walk in the park’ because of the
abundance of security and IT solutions that need to be integrated
(for example, IPS, NDR, EPP, firewalls, DNS filtering, and more.).
The key is to know how to put all of these tools in one place – and
the guide suggests new ways to do just that.

If you want to find out more and learn how to stop alert
overload, download the guide here^[3].