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How secure is it to use Bluetooth handsfree?

  • Can't someone eavesdrop the signals and listen to the conversation?
  • Does encryption in Bluetooth secure the information?
  • Can I use anyother tool to secure more the Bluetooth I use?

closed as too broad by Conor Mancone, MechMK1, Xander, forest, Benoit Esnard Jul 31 at 7:39

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • SDR is not what you would use to eavesdrop – schroeder Jul 29 at 10:59
  • If you are not using RTL-SDR, then how? – just_learning Jul 29 at 11:42
  • @just_learning RTL-SDR is not the right tool for this. Generally the RTL chips max out at about 1.7GHz, while BT uses 2.4GHz. There's however other SDRs available, albeit at typically ten times the price. – vidarlo Jul 29 at 12:01
  • Ok, supposing that an attacker has this expensive device, can he eavesdrop bluetooth communication? – just_learning Jul 29 at 12:07
  • This question is way too broad as is. Without providing the BT version, this question can't be answered. An answer I made to another question gives much more detail because the question gave enough information to determine BT version. It also links to related questions and answers that might be useful. Without more info, the answer could be anything from "not secure at all" to "quite secure". BT LE 4.2 is secure, at least. – forest Jul 30 at 1:29