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Both the cloud and on-premises systems have their advantages and disadvantages, but recent attacks against on-premise systems coupled with the proliferation and advancement of cloud-based IT architecture are tilting the scales in favor of the cloud.

A company that owns its own on-premises servers has more control over security, but are responsible for all of the upgrades, maintenance and other upkeep not to mention the large up-front costs associated with the hardware.

In the cloud, most of that upgrading and maintenance is done by the provider, and organizations can pay for those services on a fixed, monthly basis.

Although on-premises systems have historically been viewed as more secure, recent attacks say otherwise, says Aviad Hasnis, CTO of autonomous breach protection company Cynet.

Its a trend that has really stressed out the fact that companies especially in the mid market that utilize these kinds of on-premises infrastructure dont usually have the capabilities or the manpower to make sure they are all up to date in terms of security updates, he said.

Thats why weve seen so many successful attacks against on-premises systems of late including the ProxyLogon and ProxyShell exploits of Microsoft Exchange Server vulnerabilities and the massive Kaseya ransomware attack, Hasnis says.

One of the main reasons there are more attacks against on-premises systems is the fact that most cloud vulnerabilities arent assigned a CVE number, which makes it hard for hackers to discover the flaw and successful exploit it.

Case in point was the recently disclosed Azure Cosmos DB vulnerability. Microsoft mitigated the vulnerability shortly after it was discovered, and no customer data appears to be impacted.

Meanwhile, known vulnerabilities in on-premises systems are exploited until the IT department can patch their systems. For example, the ProxyLogon and ProxyShell vulnerabilities in Microsoft exchange were assigned a CVE and patched shortly after they were disclosed, but organizations that were slow to patch or implement workarounds remained vulnerable as attackers seized on the newly discovered flaws.

In the case of the Kaseya attack, the damage was limited to only on-premises customers of Kaseya using the VSA product, but once the breach was disclosed and the company had to manually reach out to customers and urge them to take their servers down.

Attacking Kaseyas SaaS customers likely would have raised additional red flags that could have stopped the attack in its tracks, Hasnis says.

There are many different defenses for detecting this kind of threat behavior, Hasnis says.

In general, the cloud can be a much safer place to be if your organization practices SaaS Security Posture Management (SSPM), which, according to Gartner, is the constant assessment of the security risk of your Saas applications, including reporting the configuration of native SaaS security settings and tweaking that configuration to reduce risk.

For example, someone using Microsoft 365 without two-factor authentication should trigger a warning, Hasnis says.

The fact that someone uses cloud or SaaS infrastructure doesnt necessarily mean its safe, but they have to make sure their organization aligns with the best security protocols, Hasnis says.

Especially for smaller organizations that dont have the in-house staff and expertise to update and patch on-premises systems after an attack, migrating to the cloud can help cut down on that response time and keep the company safe by enlisting the help of the provider and other internal IT experts.

If your organization is spread around the globe in more than one location and youre working on-prem, you dont necessarily have access to all of the different infrastructure within the environment, Hasnis says.

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Is the Cloud More Secure Than On Prem? - TechDecisions