VMware vCenter Server, the centralized management point in vSphere, is used for managing ESXi hosts, clusters, VMs, and other components in your virtualized data center. This blog post addresses the 503 Service Unavailable that you may get in vSphere Client when you try to connect to vCenter. Read to learn about the potential causes of this error and how to fix it. NAKIVO for VMware vSphere Backup Complete data protection for VMware vSphere VMs and instant recovery options.

It is tax season in the United States and that means plenty of tax scams. I recently received these SMS messages. I am a TurboTax user, so hey, these might be legit, even though they look scammy. I first looked up the ttax.us domain using GoDaddy’s Whois service. The ttax.us domain is not valid. Fact is, scammers would not have sent out a scam message using a non-existent domain, so it probably means that it was taken down. Well, that’s good!

Pharmaceutical regulation relies on three core pillars: Maximum system availability, trustworthy data and rapid recoverability. With the right strategy, manufacturers can uphold them all. Operational technology (OT) systems such as SCADA, manufacturing execution systems, cleanroom controls, environmental monitors and laboratory automation are essential for maintaining validated, compliant and uninterrupted production. When those systems fail, downtime can result in enormous financial costs.

Phishing isn’t just increasing. It’s outpacing the way many organizations test for it. Attacks have surged 400% year over year, and corporate users are now more likely to be targeted by phishing than by malware. As social engineering becomes a primary entry point into enterprise environments, how you assess phishing risk matters just as much as how often you train for it.

Our increasing dependence on the internet and, specifically, email for business and personal communication has produced the perfect environment for cybercriminals to launch phishing attacks. As organization’s technical controls have advanced, cybercriminals have evolved their attacks, making them more difficult for traditional email security solutions that use signature-based detection (such as Microsoft and secure email gateways (SEGs) to detect.

AI coding assistants are quietly resurrecting millions of abandoned open source packages. For the last decade, developers relied on a simple heuristic for open source security: Prevalence \= Trust. If a package was downloaded millions of times a week (lodash, react, requests), we assumed it was "safe enough" because thousands of eyes were on it. If it was obscure, we approached with caution.

When threat actors compromise your vendors, they are rarely aiming for a single, isolated win. They are looking for leverage. Every third party represents a potential force multiplier: a trusted connection, a shared platform, a pathway into multiple downstream environments. We recently looked at the vulnerabilities that are most commonly being used against vendors, but vulnerabilities alone don’t tell the full story.

When security leaders talk about risk, the conversation usually drifts toward ransomware gangs, zero-day exploits, or state-sponsored actors. Fair enough. Those threats are loud and visible. Yet many of the most damaging breaches begin somewhere quieter. Inside the organization. An employee exporting a customer database before resigning. A contractor reusing credentials across systems. A system administrator with broad privileges and very little oversight.