If you fail to secure your bitcoin the right way, there is definitely a high chance of losing them some time now, or in the future, there have been numerous threads on the methodologies required for newbies to adopt to safeguard their coins and keep it theirs.
There are so many measures that newbies must embrace to ensure they do not fall a victim of scam.
This is a very apt link that can help newbies understand what they must do to protect their bitcoin/wallet:
https://bitcoin.org/en/secure-your-wallet#online Don't just read, but start today to implement all you read.