Why should I focus on these key factors?
Let us take a quick look at why you should pay attention to these key factors when choosing a new online casino to join, starting with licensing and regulation. The safest online casinos in the world are licensed by one or more mid/top-tier gaming commissions/licensing authorities. 
You should only play on regulated iGaming sites that hold licenses to operate legally in your region. NEVER sign up to unregulated online casinos because they cannot be trusted.
Legally permitted casino sites that have obtained the necessary licenses from one or more trusted authorities will be controlled by reputable operators with good standing in the iGaming industry. 
They will have excellent track records, be transparent in their day-to-day operations, run an honest business, and fully comply with international AML (Anti-Money Laundering) policies.  
The safest sites will use 128-bit or higher SSL encryption to protect your account. They will have top-notch privacy and data protection policies in place and will use a range of firewalls to ensure your personal data, money, and payment method details are safe at all times. 
The expert reviews will tell you all of this information and whether the site you are considering joining is safe, which is why you should always take a minute to read the reviews first. 
The most trusted sites today have games from well-established, market-leading software providers, meaning the RTP% (return to player) payout rates will be high or above average, and there will be thousands of proven-performing live dealer and computer-generated online casino games to choose from. 
Finally, a safe online casino will only accept the most trusted online payment methods and will be quick at processing deposits and withdrawals. Their bonuses will be frequent and come with low-medium wagering requirements attached, and the customer support/player support agents will be reliable, friendly, responsive, and available 24/7.