diff --git a/bot/telegram.py b/bot/telegram.py
index 3faa94b..0a86923 100644
--- a/bot/telegram.py
+++ b/bot/telegram.py
@@ -56,7 +56,10 @@ def _build_full_text(
             result += "\n\n🆕 *Новое:*\n" + "\n".join(newest)
 
     if responsible:
-        names = ", ".join(r["user_name"] for r in responsible)
+        names = ", ".join(
+            formatter.escape_markdown(r["user_name"]) or r["user_name"]
+            for r in responsible
+        )
         result += _RESP_SEP + f"\n🙋 В работе: {names}"
 
     return result
diff --git a/intradesk/formatter.py b/intradesk/formatter.py
index f4d7581..39c0e91 100644
--- a/intradesk/formatter.py
+++ b/intradesk/formatter.py
@@ -87,6 +87,15 @@ def _shorten_name(name: str | None) -> str | None:
     return name
 
 
+def escape_markdown(text: str | None) -> str | None:
+    """Escape user-provided text for Telegram legacy Markdown parse mode."""
+    if text is None:
+        return None
+    escaped = str(text).replace("\\", "\\\\")
+    for ch in ("_", "*", "`", "["):
+        escaped = escaped.replace(ch, f"\\{ch}")
+    return escaped
+
 def _strip_quote(text: str) -> tuple[str, bool]:
     """Убирает блоки цитирования. Возвращает (cleaned_text, had_quote)."""
     cleaned, n = _QUOTE_RE.subn("", text)
@@ -146,6 +155,7 @@ def _parse_single_event(event: dict, username: str = "") -> ParsedEvent | None:
     etype     = event.get("type")
     blockname = event.get("blockname", "")
     short_user = _shorten_name(username) or "Неизвестный"
+    short_user = escape_markdown(short_user) or short_user
 
     # ── Комментарии ──────────────────────────────────────────────────────────
     if etype in (50, 55):
@@ -155,6 +165,7 @@ def _parse_single_event(event: dict, username: str = "") -> ParsedEvent | None:
         text, had_quote = _strip_quote(text)
         if not text:
             return None
+        text = escape_markdown(text) or ""
         prefix = "Ответ на прошлое: " if had_quote else ""
         lock   = " 🔒" if etype == 55 else ""
         return ParsedEvent("comment", f"*{short_user}*{lock}: {prefix}{text}")
@@ -187,8 +198,8 @@ def _parse_single_event(event: dict, username: str = "") -> ParsedEvent | None:
     if entity_data:
         val_new = entity_data.get("valuenew") or {}
         val_old = entity_data.get("valueold")
-        new_str = _extract_name(val_new, blockname)
-        old_str = _extract_name(val_old, blockname) if val_old else None
+        new_str = escape_markdown(_extract_name(val_new, blockname))
+        old_str = escape_markdown(_extract_name(val_old, blockname)) if val_old else None
         if not new_str and not old_str:
             return None
         if new_str and old_str:
@@ -205,11 +216,14 @@ def _parse_single_event(event: dict, username: str = "") -> ParsedEvent | None:
             if isinstance(attach, dict):
                 fname    = attach.get("Name", "")
                 uploader = _shorten_name(attach.get("UploadedBy", "").strip() or None) or "?"
+                fname = escape_markdown(fname) or ""
+                uploader = escape_markdown(uploader) or "?"
                 return ParsedEvent("change", f"• 📎 {uploader} прикрепил: {fname}")
             m = _FILE_EXT_RE.search(str_val.strip())
             ext = m.group(1).upper() if m else "файл"
             return ParsedEvent("change", f"• 📎 Добавлен файл .{ext}")
         truncated = str_val[:80] + ("…" if len(str_val) > 80 else "")
+        truncated = escape_markdown(truncated) or ""
         return ParsedEvent("change", f"• {label}: *{truncated}*")
 
     # ── Событие без значения ──────────────────────────────────────────────────
@@ -230,6 +244,7 @@ def get_description_event(fields: dict) -> str | None:
     if not description:
         return None
     truncated = description[:100] + ('…' if len(description) > 100 else '')
+    truncated = escape_markdown(truncated) or ""
     return f"📝 {truncated}"
 
 
@@ -374,12 +389,12 @@ def format_notification(payload: dict) -> str:
     op_type   = payload.get("Event", {}).get("OperationType", "")
     fields    = payload.get("Fields", {})
     number    = fields.get("Number", "?")
-    name      = _scalar(fields.get("name")) or "—"
-    applicant = get_initiator(fields)
-    executors = get_all_executors(fields)
-    obj_name  = get_object_name(fields)
+    name      = escape_markdown(_scalar(fields.get("name")) or "—") or "-"
+    applicant = escape_markdown(get_initiator(fields))
+    executors = [escape_markdown(x) or "" for x in get_all_executors(fields)]
+    obj_name  = escape_markdown(get_object_name(fields))
     to_flag   = is_to(fields)
-    status    = _resolve_field(fields, "status", "statuses")
+    status    = escape_markdown(_resolve_field(fields, "status", "statuses"))
 
     header = f"🆕 *Новая #{number}*" if op_type == "Created" \
              else f"🔄 *#{number} обновлена*"