Log4j, the flaw lets internet-based attackers easily seize control of everything from industrial control systems to web servers and consumer electronics. Simply identifying which systems use the utility is a challenge; it is often hidden under layers of other software. The affected software, written in the Java programming language, logs user activity on computers. Developed and maintained by a handful of volunteers under the auspices of the open-source Apache Software Foundation, it is extremely popular with commercial software developers. Why has internet become vulnerable to attacks during covid-19 period?

