The Cyber Defense eMagazine November Edition for 2023

Legacy SIEM solutions may also be limited in terms of integration with other security tools, leaving you
with unmonitored weak spots across your environment. Any integrations you do have in place must be
carefully monitored, as missed connection updates can lead to integrations breaking and events being
missed.
Extensive data storage
The entire purpose of SIEM is to collect and analyse data for suspicious occurrences. Gaining the deep,
real-time visibility required to protect your applications, infrastructure, and networks means collecting logs
and audit trails so they can be examined and reported on.
The more data your SIEM is ingesting, the more protected you’ll be—but that data has to go somewhere,
and on-premises data storage isn’t cheap.
Compliance challenges
Not only can storing data locally on your own on-premises servers be costly, but it can also be challenging
to organise and maintain if you have a lot of it.
Complying with certain data and privacy regulations often necessitates that you store data in a certain
way and often for certain periods, meaning you’ll likely need to be hands-on with managing this data.
You’ll need to be able to keep track of its movements and access history too; data privacy laws like GDPR
and CCPA, for example, have strict regulations that must be followed if data crosses international borders
or state lines. This tends to be more difficult when your data is isolated in local storage.
Lock-in periods
We’ve already mentioned how on-premises SIEMs are limited when it comes to the flexibility of users,
data streams, or resources. Licencing the product itself can also prove more restrictive than you’d like.
Once a SIEM is implemented, switching to a more suitable platform (and migrating all your log data along
with it) can be tough, not to mention prohibitively expensive. This outlay, and the sunk-cost fallacy that
often comes along with it, can prevent organisations from branching out into other security tools, and
soldiering on with a SIEM that doesn’t offer the best performance or features.
Next-generation SIEM delivers many benefits, from rich, AI-powered functionality and always-up-to-date
threat intelligence to customisation possibilities and reduced false positives. But whatever your primary
motivation for moving to a cloud-based SIEM, the end result of these benefits is better protection for your
organisation in a time when the threat of cyberattacks and the impact of insider threats are on the rise.
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