One of the measures of the strength of an encryption system is how long it would theoretically take an attacker to mount a successful brute-force attack against it. Brute-force attacks are an application of brute-force search, the general problem-solving technique of enumerating all candidates and checking each one.
Ventricular fibrillation is one type of arrhythmia that can be deadly. It occurs when the heart beats with rapid, erratic electrical impulses. This causes pumping chambers in your heart (the ventricles) to quiver uselessly instead of pumping blood. Without an effective heartbeat, blood pressure plummets, cutting off blood supply to your vital organs.
Underlying medical conditions may be the cause of heart palpitations. These include: overactive thyroid; anemia; low blood sugar; low potassium; dehydration; high temperature and fever; loss of blood; shock; low oxygen or carbon dioxide levels in the blood; Hormone changes. Hormonal changes are another possible cause of heart palpitations. Changes in hormone levels may result from: menstrual periods; pregnancy; menopause; Heart conditions. Palpitations can also be caused by heart conditions, including: arrhythmias (abnormal heart rhythms) coronary artery disease or a heart attack; heart valve problems; heart failure