"Once cybercriminals recognised the monetary opportunity in Bitcoin," the authors write "it became a key focus of their activity".
It also notes that, as the number of girls at the school continues to increase, sport for girls has become a key focus.
Abaaoud was born in Belgium and grew up in the Brussels suburb of Molenbeek, which had become a key focus for investigators in recent days.
Assessment of child protection services reform has become a key focus of our work at the European Social Network, which promotes the exchange of knowledge among local public social services to contribute to effective policy development.
Ms. Jaus said that since her case involving the four young girls, the problem of under-age prostitution seems to have mushroomed, and has become a key focus at the office of Charles J. Hynes, the Brooklyn district attorney.
Excess sugar intake has become a key focus for health researchers and campaigners following evidence that it causes at least as much damage to human beings as previously identified vices such as salt.
The response to last year's sudden rise in child migrants – a fourfold increase on figures for 2014 – has become a key focus of our work at the European Social Network, which promotes the exchange of knowledge among local public social services to contribute to effective policy development.
Survivors UK, which has received £70,000 a year from the Ministry of Justice for the past four years to fund its counselling services, is now being placed under significant pressure at a time when tackling rape, sexual violence and child sexual abuse has become a key focus for the police and the government following the revelations of Jimmy Savile's years of abuse.
Shortening hospital stays has become a key focus in psychiatric care in recent years.
High-yield agriculture relies on fertilizers that, therefore, become a key focus to address concerns on global food security.
