Skype should be stopped! I felt so shocked returning after AB from DW to clearnet and see guys using Skype to communicate? Seriously? Okay most Jabber servers are compromised so we can't rely on OTR but there are apps that offer end to end encryption.
Security wise Wickr and Telegram offer end to end encryption.
However keep in mind, is there any form of security?
Let's say that a refund request is being made to a refunder via any of the above apps.
Now let's hypothesise that the refunder :
1) Takes a Screenshot of the information (Bad OPSEC)
2) Copies the info from his client to a txt ( Bad OPSEC)
3) Takes a photo of the info to his mobile phone (Bad OPSEC)
What i am trying to say here even though it matters what sort of encryption is used between delicate information what matters is how this information is handled by the receiver.
I will not brag being a security analyst or white/grey/black hat, we are one nickname in a forum here trying to share information.
Let's be safe for Christ Shake.