However, the use of innovative, vanishing, and encrypted methods of private communication, as well as complex and untraceable funding arrangements in several cases, makes it impossible to establish the pre-ponderance of probability.

Source: https://www.financialexpress.com/market/sebis-proposals-to-deal-with-unexplained-suspicious-trading-patterns-to-help-curb-fraud-boost-investors-confidence-experts/3097840/