diff --git a/internal/web/uploads_badinput_handler_test.go b/internal/web/uploads_badinput_handler_test.go
index cb338f7..6cb594f 100644
--- a/internal/web/uploads_badinput_handler_test.go
+++ b/internal/web/uploads_badinput_handler_test.go
@@ -1,7 +1,9 @@
 package web_test
 
 import (
+	"bytes"
 	"context"
+	"io"
 	"log/slog"
 	"net/http"
 	"testing"
@@ -60,3 +62,47 @@ func TestUploadPost_AMalformedMultipartHeaderIsA400AndItsTextIsNotLogged(t *test
 	assert.Empty(t, sub.jobs)
 	assert.NotContains(t, buf.String(), "zebrakaka", "a file name is private content")
 }
+
+func TestUploadPost_ABodyCutOffInsideTheFilePartIsA400NotA500(t *testing.T) {
+	app, sub := newUploadApp(t, audioOK, 200<<20)
+	req := uploadReq(t, "t", "a.m4a", bytes.Repeat([]byte("a"), 4096))
+	raw, err := io.ReadAll(req.Body)
+	require.NoError(t, err)
+	req.Body = io.NopCloser(bytes.NewReader(raw[:len(raw)-2000])) // the sender hung up mid-file
+	buf := &lockedBuf{}
+	app.Log = slog.New(slog.NewTextHandler(buf, nil))
+
+	rec := do(t, app, req)
+
+	assert.Equal(t, http.StatusBadRequest, rec.Code, "a connection that drops mid-upload is the sender's to retry, not a server fault")
+	assert.Empty(t, sub.jobs)
+	assert.NotContains(t, buf.String(), "level=ERROR")
+}
+
+func TestUploadPost_BidirectionalControlCharactersAreStrippedFromATitle(t *testing.T) {
+	// U+202E reverses the text that follows it, so a title could render reversed on its
+	// owner's own page (second adversarial review).
+	app, sub := newUploadApp(t, audioOK, 200<<20)
+
+	rec := do(t, app, uploadReq(t, "Sprint ‮review ⁦x⁩ ‏ok", "a.m4a", []byte("x")))
+
+	require.Equal(t, http.StatusSeeOther, rec.Code)
+	var title string
+	require.NoError(t, rawPool(t).QueryRow(context.Background(), `SELECT title FROM uploaded_transcripts WHERE id = $1`, sub.jobs[0].UploadID).Scan(&title))
+	for _, r := range []string{"‮", "⁦", "⁩", "‏"} {
+		assert.NotContains(t, title, r)
+	}
+	assert.Contains(t, title, "Sprint")
+	assert.Contains(t, title, "review")
+}
+
+func TestUploadPost_SwedishLettersAndEmojiSurviveTheTitleCleaning(t *testing.T) {
+	app, sub := newUploadApp(t, audioOK, 200<<20)
+
+	rec := do(t, app, uploadReq(t, "Möte åäö 🎙️", "a.m4a", []byte("x")))
+
+	require.Equal(t, http.StatusSeeOther, rec.Code)
+	var title string
+	require.NoError(t, rawPool(t).QueryRow(context.Background(), `SELECT title FROM uploaded_transcripts WHERE id = $1`, sub.jobs[0].UploadID).Scan(&title))
+	assert.Equal(t, "Möte åäö 🎙️", title)
+}