Critical. A vulnerability whose exploitation could allow code execution without user interaction. These scenarios include self-propagating malware (e.g. network worms), or unavoidable common use scenarios where code execution occurs without warnings or prompts. This could mean browsing to a web page or opening email.
A strain is a stretching or tearing of muscle or tendon. A tendon is a fibrous cord of tissue that connects muscles to bones. Strains often occur in the lower back and in the hamstring muscle in the back of your thigh. Initial treatment for both sprains and strains includes rest, ice, compression and elevation.
People often times confuse the terms strain and sprain.. A strain is an injury, a stretching, or even a tearing of what we call the muscular tenuous unit. The tendon and the muscle that attaches to it, when those are injured or torn, we call that a strain: s-t-r-a-i-n.t's what we call a mild or minor type of strain, or pull of a muscle. A grade-two injury is the type of injury or level of injury that most people will seek medical attention for. And that's where there's actually some macroscopic tearing of the fibers.