Bitcoin has quickly rebounded from a six-month low of $53,500 to reach $66,000, aiming to retest its all-time high of $73,700 amid a global IT outage affecting Microsoft's services. The cyber disruption was caused by a faulty software update, but Bitcoin's price remained resilient, capturing the attention of pro-crypto US Senator Cynthia Lummis. Market analysts note a sell signal on Bitcoin's daily chart but indicate this could be invalidated if Bitcoin closes above $67,500. Current resistance levels and support from the 200-day EMA are key factors for its continued rise.