lol768 on Monzo urges 480k customers to change their pin numbers

Comment on Monzo urges 480k customers to change their pin numbers parent

This is correct, I've seen the diff of the two Android versions.

Do you have a source for this you could share?

Monzo will post a technical write-up soon. But, in the meantime:

Before:

  .method public abstract pan(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Lio/reactivex/Single;
      .param p1    # Ljava/lang/String;
    .annotation runtime Lretrofit2/http/Query;
        value = "account_id"
    .end annotation
      .end param
      .param p2    # Ljava/lang/String;
    .annotation runtime Lretrofit2/http/Query;
        value = "card_id"
    .end annotation
      .end param
      .param p3    # Ljava/lang/String;
    .annotation runtime Lretrofit2/http/Query;
        value = "challenge_type"
    .end annotation
      .end param
      .param p4    # Ljava/lang/String;
    .annotation runtime Lretrofit2/http/Query;
        value = "challenge"
    .end annotation
      .end param
      .param p5    # Ljava/lang/String;
    .annotation runtime Lretrofit2/http/Query;
        value = "idempotency_key"
    .end annotation
      .end param
      .annotation system Ldalvik/annotation/Signature;
    value = {
        "(",
        "Ljava/lang/String;",
        "Ljava/lang/String;",
        "Ljava/lang/String;",
        "Ljava/lang/String;",
        "Ljava/lang/String;",
        ")",
        "Lio/reactivex/Single<",
        "Lcom/monzo/card/data/api/PanResponse;",
        ">;"
    }
      .end annotation

      .annotation runtime Lretrofit2/http/GET;
    value = "card/pan"
      .end annotation
  .end method

After (v2.59.1 has the fix):

  .method public abstract pan(Lcom/monzo/card/data/api/RetrievePanRequest;)Lio/reactivex/Single;
    .param p1  # Lcom/monzo/card/data/api/RetrievePanRequest;
    .annotation runtime Lretrofit2/http/Body;
    .end annotation
    .end param
    .annotation system Ldalvik/annotation/Signature;
    value = {
      "(",
      "Lcom/monzo/card/data/api/RetrievePanRequest;",
      ")",
      "Lio/reactivex/Single<",
      "Lcom/monzo/card/data/api/PanResponse;",
      ">;"
    }
    .end annotation

    .annotation runtime Lretrofit2/http/PUT;
    value = "card/retrieve-pan"
    .end annotation
  .end method

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